Finding the Third Proportional to 131,449.50 and 287,775

Step by Step Solution

1. Step 1: Write the proportion equation
   131,449.50 : 287,775 = 287,775 : x
2. Step 2: Convert to fraction form
   131,449.50/287,775 = 287,775/x
3. Step 3: Cross multiply
   131,449.50x = 287,775 × 287,775
4. Step 4: Simplify right side
   131,449.50x = 82,814,450,625
5. Step 5: Solve for x
   x = 82,814,450,625/131,449.50
6. Step 6: Final answer
   x = 630,009.63