Finding the Third Proportional to 402,490.50 and 838,053

Step by Step Solution

1. Step 1: Write the proportion equation
   402,490.50 : 838,053 = 838,053 : x
2. Step 2: Convert to fraction form
   402,490.50/838,053 = 838,053/x
3. Step 3: Cross multiply
   402,490.50x = 838,053 × 838,053
4. Step 4: Simplify right side
   402,490.50x = 702,332,830,809
5. Step 5: Solve for x
   x = 702,332,830,809/402,490.50
6. Step 6: Final answer
   x = 1,744,967.47