Finding the Third Proportional to 247,551 and 386,116.50

Step by Step Solution

1. Step 1: Write the proportion equation
   247,551 : 386,116.50 = 386,116.50 : x
2. Step 2: Convert to fraction form
   247,551/386,116.50 = 386,116.50/x
3. Step 3: Cross multiply
   247,551x = 386,116.50 × 386,116.50
4. Step 4: Simplify right side
   247,551x = 149,085,951,572.25
5. Step 5: Solve for x
   x = 149,085,951,572.25/247,551
6. Step 6: Final answer
   x = 602,243.38