Finding the Third Proportional to 88,912.50 and 209,881.50

Step by Step Solution

1. Step 1: Write the proportion equation
   88,912.50 : 209,881.50 = 209,881.50 : x
2. Step 2: Convert to fraction form
   88,912.50/209,881.50 = 209,881.50/x
3. Step 3: Cross multiply
   88,912.50x = 209,881.50 × 209,881.50
4. Step 4: Simplify right side
   88,912.50x = 44,050,244,042.25
5. Step 5: Solve for x
   x = 44,050,244,042.25/88,912.50
6. Step 6: Final answer
   x = 495,433.65