Finding the Third Proportional to 99,000.50 and 131,275.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,000.50 : 131,275.50 = 131,275.50 : x
2. Step 2: Convert to fraction form
   99,000.50/131,275.50 = 131,275.50/x
3. Step 3: Cross multiply
   99,000.50x = 131,275.50 × 131,275.50
4. Step 4: Simplify right side
   99,000.50x = 17,233,256,900.25
5. Step 5: Solve for x
   x = 17,233,256,900.25/99,000.50
6. Step 6: Final answer
   x = 174,072.42