Finding the Third Proportional to 485,632 and 731,688

Step by Step Solution

1. Step 1: Write the proportion equation
   485,632 : 731,688 = 731,688 : x
2. Step 2: Convert to fraction form
   485,632/731,688 = 731,688/x
3. Step 3: Cross multiply
   485,632x = 731,688 × 731,688
4. Step 4: Simplify right side
   485,632x = 535,367,329,344
5. Step 5: Solve for x
   x = 535,367,329,344/485,632
6. Step 6: Final answer
   x = 1,102,413.62