Bearings are in relation to north. In the triangle PQR, angle Q=36+180-125=91 degrees.
Using the cosine rule, PR^2=PQ^2+QR^2-2PQ.QRcosQ=6400+40000-2*16000cos91=46958.48 approx.
Therefore PR=216.7km approx.
We can find other angles in PQR using the sine rule, so sinP/200=sin91/216.7=0.004614.
sinP=200*0.004614=0.9228 approx.
From this P=67.34º. To find the bearing we need to add 36º, the initial bearing of Q from P=103.34.