Finding the Third Proportional to 11,909.53 and 25,458.47

Step by Step Solution

1. Step 1: Write the proportion equation
   11,909.53 : 25,458.47 = 25,458.47 : x
2. Step 2: Convert to fraction form
   11,909.53/25,458.47 = 25,458.47/x
3. Step 3: Cross multiply
   11,909.53x = 25,458.47 × 25,458.47
4. Step 4: Simplify right side
   11,909.53x = 648,133,631.09
5. Step 5: Solve for x
   x = 648,133,631.09/11,909.53
6. Step 6: Final answer
   x = 54,421.42