Finding the Third Proportional to 4,471.59 and 9,711.42

Step by Step Solution

1. Step 1: Write the proportion equation
   4,471.59 : 9,711.42 = 9,711.42 : x
2. Step 2: Convert to fraction form
   4,471.59/9,711.42 = 9,711.42/x
3. Step 3: Cross multiply
   4,471.59x = 9,711.42 × 9,711.42
4. Step 4: Simplify right side
   4,471.59x = 94,311,714.83
5. Step 5: Solve for x
   x = 94,311,714.83/4,471.59
6. Step 6: Final answer
   x = 21,091.30