Finding the Third Proportional to 40,315.50 and 85,491

Step by Step Solution

1. Step 1: Write the proportion equation
   40,315.50 : 85,491 = 85,491 : x
2. Step 2: Convert to fraction form
   40,315.50/85,491 = 85,491/x
3. Step 3: Cross multiply
   40,315.50x = 85,491 × 85,491
4. Step 4: Simplify right side
   40,315.50x = 7,308,711,081
5. Step 5: Solve for x
   x = 7,308,711,081/40,315.50
6. Step 6: Final answer
   x = 181,287.87