the point is (19, -12)
and the mid point is (7, 11
now for other point calculation)
[tex]\begin{gathered} 7=\frac{19+x}{2} \\ 14=19+x \\ x=14-19=-5 \end{gathered}[/tex][tex]\begin{gathered} 11=\frac{-12+y}{2} \\ 22=-12+y \\ y=12+22=34 \end{gathered}[/tex]so the other endpoint is (-5, 34).