Finding the Third Proportional to 131,474 and 287,282

Step by Step Solution

1. Step 1: Write the proportion equation
   131,474 : 287,282 = 287,282 : x
2. Step 2: Convert to fraction form
   131,474/287,282 = 287,282/x
3. Step 3: Cross multiply
   131,474x = 287,282 × 287,282
4. Step 4: Simplify right side
   131,474x = 82,530,947,524
5. Step 5: Solve for x
   x = 82,530,947,524/131,474
6. Step 6: Final answer
   x = 627,735.88