Finding the Third Proportional to 8,456.06 and 13,144.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,456.06 : 13,144.78 = 13,144.78 : x
2. Step 2: Convert to fraction form
   8,456.06/13,144.78 = 13,144.78/x
3. Step 3: Cross multiply
   8,456.06x = 13,144.78 × 13,144.78
4. Step 4: Simplify right side
   8,456.06x = 172,785,274.11
5. Step 5: Solve for x
   x = 172,785,274.11/8,456.06
6. Step 6: Final answer
   x = 20,433.30