Finding the Third Proportional to 9,144.56 and 19,653.47

Step by Step Solution

1. Step 1: Write the proportion equation
   9,144.56 : 19,653.47 = 19,653.47 : x
2. Step 2: Convert to fraction form
   9,144.56/19,653.47 = 19,653.47/x
3. Step 3: Cross multiply
   9,144.56x = 19,653.47 × 19,653.47
4. Step 4: Simplify right side
   9,144.56x = 386,258,833.91
5. Step 5: Solve for x
   x = 386,258,833.91/9,144.56
6. Step 6: Final answer
   x = 42,239.18