Finding the Third Proportional to 644,592 and 1,403,875.50

Step by Step Solution

1. Step 1: Write the proportion equation
   644,592 : 1,403,875.50 = 1,403,875.50 : x
2. Step 2: Convert to fraction form
   644,592/1,403,875.50 = 1,403,875.50/x
3. Step 3: Cross multiply
   644,592x = 1,403,875.50 × 1,403,875.50
4. Step 4: Simplify right side
   644,592x = 1,970,866,419,500.25
5. Step 5: Solve for x
   x = 1,970,866,419,500.25/644,592
6. Step 6: Final answer
   x = 3,057,540.92