Finding the Third Proportional to 8,434.13 and 13,116.94

Step by Step Solution

1. Step 1: Write the proportion equation
   8,434.13 : 13,116.94 = 13,116.94 : x
2. Step 2: Convert to fraction form
   8,434.13/13,116.94 = 13,116.94/x
3. Step 3: Cross multiply
   8,434.13x = 13,116.94 × 13,116.94
4. Step 4: Simplify right side
   8,434.13x = 172,054,049.38
5. Step 5: Solve for x
   x = 172,054,049.38/8,434.13
6. Step 6: Final answer
   x = 20,399.75