Finding the Third Proportional to 8,433.28 and 13,116.09

Step by Step Solution

1. Step 1: Write the proportion equation
   8,433.28 : 13,116.09 = 13,116.09 : x
2. Step 2: Convert to fraction form
   8,433.28/13,116.09 = 13,116.09/x
3. Step 3: Cross multiply
   8,433.28x = 13,116.09 × 13,116.09
4. Step 4: Simplify right side
   8,433.28x = 172,031,915.26
5. Step 5: Solve for x
   x = 172,031,915.26/8,433.28
6. Step 6: Final answer
   x = 20,399.17