Finding the Third Proportional to 520,737 and 781,105.50

Step by Step Solution

1. Step 1: Write the proportion equation
   520,737 : 781,105.50 = 781,105.50 : x
2. Step 2: Convert to fraction form
   520,737/781,105.50 = 781,105.50/x
3. Step 3: Cross multiply
   520,737x = 781,105.50 × 781,105.50
4. Step 4: Simplify right side
   520,737x = 610,125,802,130.25
5. Step 5: Solve for x
   x = 610,125,802,130.25/520,737
6. Step 6: Final answer
   x = 1,171,658.25