Finding the Third Proportional to 368,500.50 and 781,285.50

Step by Step Solution

1. Step 1: Write the proportion equation
   368,500.50 : 781,285.50 = 781,285.50 : x
2. Step 2: Convert to fraction form
   368,500.50/781,285.50 = 781,285.50/x
3. Step 3: Cross multiply
   368,500.50x = 781,285.50 × 781,285.50
4. Step 4: Simplify right side
   368,500.50x = 610,407,032,510.25
5. Step 5: Solve for x
   x = 610,407,032,510.25/368,500.50
6. Step 6: Final answer
   x = 1,656,461.88