Finding the Third Proportional to 131,005 and 280,687.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,005 : 280,687.50 = 280,687.50 : x
2. Step 2: Convert to fraction form
   131,005/280,687.50 = 280,687.50/x
3. Step 3: Cross multiply
   131,005x = 280,687.50 × 280,687.50
4. Step 4: Simplify right side
   131,005x = 78,785,472,656.25
5. Step 5: Solve for x
   x = 78,785,472,656.25/131,005
6. Step 6: Final answer
   x = 601,392.87