Finding the Third Proportional to 99,310.50 and 153,870.75

Step by Step Solution

1. Step 1: Write the proportion equation
   99,310.50 : 153,870.75 = 153,870.75 : x
2. Step 2: Convert to fraction form
   99,310.50/153,870.75 = 153,870.75/x
3. Step 3: Cross multiply
   99,310.50x = 153,870.75 × 153,870.75
4. Step 4: Simplify right side
   99,310.50x = 23,676,207,705.56
5. Step 5: Solve for x
   x = 23,676,207,705.56/99,310.50
6. Step 6: Final answer
   x = 238,405.89