Finding the Third Proportional to 8,404.28 and 18,287.16

Step by Step Solution

1. Step 1: Write the proportion equation
   8,404.28 : 18,287.16 = 18,287.16 : x
2. Step 2: Convert to fraction form
   8,404.28/18,287.16 = 18,287.16/x
3. Step 3: Cross multiply
   8,404.28x = 18,287.16 × 18,287.16
4. Step 4: Simplify right side
   8,404.28x = 334,420,184.17
5. Step 5: Solve for x
   x = 334,420,184.17/8,404.28
6. Step 6: Final answer
   x = 39,791.66