Finding the Third Proportional to 131,468 and 287,814

Step by Step Solution

1. Step 1: Write the proportion equation
   131,468 : 287,814 = 287,814 : x
2. Step 2: Convert to fraction form
   131,468/287,814 = 287,814/x
3. Step 3: Cross multiply
   131,468x = 287,814 × 287,814
4. Step 4: Simplify right side
   131,468x = 82,836,898,596
5. Step 5: Solve for x
   x = 82,836,898,596/131,468
6. Step 6: Final answer
   x = 630,091.72