Finding the Third Proportional to 131,472 and 287,822

Step by Step Solution

1. Step 1: Write the proportion equation
   131,472 : 287,822 = 287,822 : x
2. Step 2: Convert to fraction form
   131,472/287,822 = 287,822/x
3. Step 3: Cross multiply
   131,472x = 287,822 × 287,822
4. Step 4: Simplify right side
   131,472x = 82,841,503,684
5. Step 5: Solve for x
   x = 82,841,503,684/131,472
6. Step 6: Final answer
   x = 630,107.58