Finding the Third Proportional to 99,707.50 and 147,995.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,707.50 : 147,995.50 = 147,995.50 : x
2. Step 2: Convert to fraction form
   99,707.50/147,995.50 = 147,995.50/x
3. Step 3: Cross multiply
   99,707.50x = 147,995.50 × 147,995.50
4. Step 4: Simplify right side
   99,707.50x = 21,902,668,020.25
5. Step 5: Solve for x
   x = 21,902,668,020.25/99,707.50
6. Step 6: Final answer
   x = 219,669.21