$(15\%)$ Problem $7$: Two charges are placed on the $x$ axis, equidistant from the $y$ axis. The first charge, $q_1=1\mathrm{.}11C,$ is placed at the coordinates $(d,0),$ and the second charge, $q_2=2\mathrm{.}02C,$ is placed at the coordinates $(-d,0)$ where $d=0\mathrm{.}218m.$

There is a location on the $x$ axis, $(x_0,0),$ where the net electric field has a magnitude of zero. What is the value, in meters, of $x_0?$