In the diagram below of triangle P, Q, RPQR, SS is the midpoint of start overline, P, R, end overline 
PR
  and TT is the midpoint of start overline, Q, R, end overline 
QR
  . If S, T, equals, 5, x, minus, 22ST=5x−22, and P, Q, equals, 3, x, plus, 19PQ=3x+19, what is the measure of start overline, P, Q, end overline 
PQ
 ?
                                             
                                          
                                          
                                       