Answer:
Action force: Would be the force of your feet against the Earth given by the weight defined as:

Where g is a constat who represent the gravity  in Earth
 in Earth
Reaction force: Would be the force of the Earth pushing against your feet. And on this case is represented by the normal force defined as:
 
 
Where  represent the friction coefficient between the ground and the object.
 represent the friction coefficient between the ground and the object.
And  the friction force.
 the friction force.
If we don't have any other forces involved in the y axis we can conclude that:

And as we can see we have that Action force = Reaction force
So then the third Law of Newton is satisfied. 
Explanation:
For this case we have this:
Action force: Would be the force of your feet against the Earth given by the weight defined as:

Where g is a constat who represent the gravity  in Earth
 in Earth
Reaction force: Would be the force of the Earth pushing against your feet. And on this case is represented by the normal force defined as:
 
 
Where  represent the friction coefficient between the ground and the object.
 represent the friction coefficient between the ground and the object.
And  the friction force.
 the friction force.
If we don't have any other forces involved in the y axis we can conclude that:

And as we can see we have that Action force = Reaction force
So then the third Law of Newton is satisfied.