Finding the Third Proportional to 131,440.50 and 287,757

Step by Step Solution

1. Step 1: Write the proportion equation
   131,440.50 : 287,757 = 287,757 : x
2. Step 2: Convert to fraction form
   131,440.50/287,757 = 287,757/x
3. Step 3: Cross multiply
   131,440.50x = 287,757 × 287,757
4. Step 4: Simplify right side
   131,440.50x = 82,804,091,049
5. Step 5: Solve for x
   x = 82,804,091,049/131,440.50
6. Step 6: Final answer
   x = 629,973.95