Finding the Third Proportional to 647,520 and 1,373,940

Step by Step Solution

1. Step 1: Write the proportion equation
   647,520 : 1,373,940 = 1,373,940 : x
2. Step 2: Convert to fraction form
   647,520/1,373,940 = 1,373,940/x
3. Step 3: Cross multiply
   647,520x = 1,373,940 × 1,373,940
4. Step 4: Simplify right side
   647,520x = 1,887,711,123,600
5. Step 5: Solve for x
   x = 1,887,711,123,600/647,520
6. Step 6: Final answer
   x = 2,915,293.93