Lets say i have a LineForce.
The formula for finding actual magnitude for a lineforce with inversesquarelaw enabled is
ActualMagnitude = Magnitude / (Separation ^ 2)
Lets say i have an object and 2 points.

Lets also say the magnitude at point y is 1000 (inversesquarelaw enabled)
Lets also say the separation between points x and y is 1000
How would I get the magnitude at point x (the centre) while only knowing the magnitude at point y?