Finding the Third Proportional to 131,792 and 287,446

Step by Step Solution

1. Step 1: Write the proportion equation
   131,792 : 287,446 = 287,446 : x
2. Step 2: Convert to fraction form
   131,792/287,446 = 287,446/x
3. Step 3: Cross multiply
   131,792x = 287,446 × 287,446
4. Step 4: Simplify right side
   131,792x = 82,625,202,916
5. Step 5: Solve for x
   x = 82,625,202,916/131,792
6. Step 6: Final answer
   x = 626,936.41