Finding the Third Proportional to 442,892.25 and 687,100.50

Step by Step Solution

1. Step 1: Write the proportion equation
   442,892.25 : 687,100.50 = 687,100.50 : x
2. Step 2: Convert to fraction form
   442,892.25/687,100.50 = 687,100.50/x
3. Step 3: Cross multiply
   442,892.25x = 687,100.50 × 687,100.50
4. Step 4: Simplify right side
   442,892.25x = 472,107,097,100.25
5. Step 5: Solve for x
   x = 472,107,097,100.25/442,892.25
6. Step 6: Final answer
   x = 1,065,963.78