Finding the Third Proportional to 456,681 and 649,108.50

Step by Step Solution

1. Step 1: Write the proportion equation
   456,681 : 649,108.50 = 649,108.50 : x
2. Step 2: Convert to fraction form
   456,681/649,108.50 = 649,108.50/x
3. Step 3: Cross multiply
   456,681x = 649,108.50 × 649,108.50
4. Step 4: Simplify right side
   456,681x = 421,341,844,772.25
5. Step 5: Solve for x
   x = 421,341,844,772.25/456,681
6. Step 6: Final answer
   x = 922,617.42