Finding the Third Proportional to 99,760.50 and 146,724.75

Step by Step Solution

1. Step 1: Write the proportion equation
   99,760.50 : 146,724.75 = 146,724.75 : x
2. Step 2: Convert to fraction form
   99,760.50/146,724.75 = 146,724.75/x
3. Step 3: Cross multiply
   99,760.50x = 146,724.75 × 146,724.75
4. Step 4: Simplify right side
   99,760.50x = 21,528,152,262.56
5. Step 5: Solve for x
   x = 21,528,152,262.56/99,760.50
6. Step 6: Final answer
   x = 215,798.36