Finding the Third Proportional to 99,685.50 and 148,088.25

Step by Step Solution

1. Step 1: Write the proportion equation
   99,685.50 : 148,088.25 = 148,088.25 : x
2. Step 2: Convert to fraction form
   99,685.50/148,088.25 = 148,088.25/x
3. Step 3: Cross multiply
   99,685.50x = 148,088.25 × 148,088.25
4. Step 4: Simplify right side
   99,685.50x = 21,930,129,788.06
5. Step 5: Solve for x
   x = 21,930,129,788.06/99,685.50
6. Step 6: Final answer
   x = 219,993.18