Finding the Third Proportional to 131,459 and 287,791

Step by Step Solution

1. Step 1: Write the proportion equation
   131,459 : 287,791 = 287,791 : x
2. Step 2: Convert to fraction form
   131,459/287,791 = 287,791/x
3. Step 3: Cross multiply
   131,459x = 287,791 × 287,791
4. Step 4: Simplify right side
   131,459x = 82,823,659,681
5. Step 5: Solve for x
   x = 82,823,659,681/131,459
6. Step 6: Final answer
   x = 630,034.15