Finding the Third Proportional to 309,632 and 632,384

Step by Step Solution

1. Step 1: Write the proportion equation
   309,632 : 632,384 = 632,384 : x
2. Step 2: Convert to fraction form
   309,632/632,384 = 632,384/x
3. Step 3: Cross multiply
   309,632x = 632,384 × 632,384
4. Step 4: Simplify right side
   309,632x = 399,909,523,456
5. Step 5: Solve for x
   x = 399,909,523,456/309,632
6. Step 6: Final answer
   x = 1,291,563.93