Finding the Third Proportional to 131,112 and 287,496

Step by Step Solution

1. Step 1: Write the proportion equation
   131,112 : 287,496 = 287,496 : x
2. Step 2: Convert to fraction form
   131,112/287,496 = 287,496/x
3. Step 3: Cross multiply
   131,112x = 287,496 × 287,496
4. Step 4: Simplify right side
   131,112x = 82,653,950,016
5. Step 5: Solve for x
   x = 82,653,950,016/131,112
6. Step 6: Final answer
   x = 630,407.21