Finding the Third Proportional to 90,112.50 and 208,605.38

Step by Step Solution

1. Step 1: Write the proportion equation
   90,112.50 : 208,605.38 = 208,605.38 : x
2. Step 2: Convert to fraction form
   90,112.50/208,605.38 = 208,605.38/x
3. Step 3: Cross multiply
   90,112.50x = 208,605.38 × 208,605.38
4. Step 4: Simplify right side
   90,112.50x = 43,516,202,478.89
5. Step 5: Solve for x
   x = 43,516,202,478.89/90,112.50
6. Step 6: Final answer
   x = 482,909.72