A spaceship of m m is located between two planets of mes M1 and M2?

A spaceship of m m is located between two planets of mes M1 and M2 = 2.49 M1; the distance between the two planets is L, as shown in the figure. ume that L is much larger than the radius of either planet. What is the distance x (in terms of L) of the spacecraft from M1 if the net force on the spacecraft is zero?