A charge of +q is located at the origin, while an identical charge is located on the x axis at x = 0.

A charge of +q is located at the origin, while an identical charge is located on the x axis at x = 0.58 m. A third charge of +4q is located on the x axis at such a place that the net electrostatic force on the charge at the origin triples, its direction remaining unchanged. Where should the third charge be located?