The distance between $2$ points on a map at a scale of $1$:$62,500$ is $28\mathrm{.}65$ mm$.$ The distance

between the same points on a vertical photo taken with a $152\mathrm{.}11$ mm focal length camera is

$46\mathrm{.}19$ mm$.$ If both points lie at an elevation of $84$ meters, compute the flying height above

datum.