Finding the Third Proportional to 131,026.50 and 279,211.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,026.50 : 279,211.50 = 279,211.50 : x
2. Step 2: Convert to fraction form
   131,026.50/279,211.50 = 279,211.50/x
3. Step 3: Cross multiply
   131,026.50x = 279,211.50 × 279,211.50
4. Step 4: Simplify right side
   131,026.50x = 77,959,061,732.25
5. Step 5: Solve for x
   x = 77,959,061,732.25/131,026.50
6. Step 6: Final answer
   x = 594,986.98