Two equal magnitude point charges, one positive and one negative, are situated on an x$-$axis . Point P is located off the axis a distance r$1$ from the positive charge q$1$ and a distance r$2$ from the negative charge. Here the distances are the same: r$1=$r$2=0\mathrm{.}750$m. The values of the charges are: q$1=+6\mathrm{.}75$ times $106$C ,q$2=6\mathrm{.}75$ times $106$C .What is the total electric potential at point P due to point charges $1$ and $2?$