Finding the Third Proportional to 88,705.50 and 199,618.50

Step by Step Solution

1. Step 1: Write the proportion equation
   88,705.50 : 199,618.50 = 199,618.50 : x
2. Step 2: Convert to fraction form
   88,705.50/199,618.50 = 199,618.50/x
3. Step 3: Cross multiply
   88,705.50x = 199,618.50 × 199,618.50
4. Step 4: Simplify right side
   88,705.50x = 39,847,545,542.25
5. Step 5: Solve for x
   x = 39,847,545,542.25/88,705.50
6. Step 6: Final answer
   x = 449,211.67