Finding the Third Proportional to 131,466 and 287,810

Step by Step Solution

1. Step 1: Write the proportion equation
   131,466 : 287,810 = 287,810 : x
2. Step 2: Convert to fraction form
   131,466/287,810 = 287,810/x
3. Step 3: Cross multiply
   131,466x = 287,810 × 287,810
4. Step 4: Simplify right side
   131,466x = 82,834,596,100
5. Step 5: Solve for x
   x = 82,834,596,100/131,466
6. Step 6: Final answer
   x = 630,083.79