Finding the Third Proportional to 40,891.50 and 90,517.50

Step by Step Solution

1. Step 1: Write the proportion equation
   40,891.50 : 90,517.50 = 90,517.50 : x
2. Step 2: Convert to fraction form
   40,891.50/90,517.50 = 90,517.50/x
3. Step 3: Cross multiply
   40,891.50x = 90,517.50 × 90,517.50
4. Step 4: Simplify right side
   40,891.50x = 8,193,417,806.25
5. Step 5: Solve for x
   x = 8,193,417,806.25/40,891.50
6. Step 6: Final answer
   x = 200,369.71