Finding the Third Proportional to 9,714.38 and 20,979.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,714.38 : 20,979.56 = 20,979.56 : x
2. Step 2: Convert to fraction form
   9,714.38/20,979.56 = 20,979.56/x
3. Step 3: Cross multiply
   9,714.38x = 20,979.56 × 20,979.56
4. Step 4: Simplify right side
   9,714.38x = 440,142,042.69
5. Step 5: Solve for x
   x = 440,142,042.69/9,714.38
6. Step 6: Final answer
   x = 45,308.32