For the points $P_1(7,4,5)$ and $P_2(8,5,6),$ find the direction of vec$(P_1{P}_2)$ and the midpoint of line segment $P_1{P}_2.$

The direction of vec$(P_1{P}_2)$ is $(1)i(1)j(1)k.$

$($Type exact answers, using radicals as needed.$)$

The midpoint of $P_1{P}_2$ is $$

$$

$$

$1.$

$($Type integers or simplified fractions.$)$