Finding the Third Proportional to 12,909.38 and 17,556.75

Step by Step Solution

1. Step 1: Write the proportion equation
   12,909.38 : 17,556.75 = 17,556.75 : x
2. Step 2: Convert to fraction form
   12,909.38/17,556.75 = 17,556.75/x
3. Step 3: Cross multiply
   12,909.38x = 17,556.75 × 17,556.75
4. Step 4: Simplify right side
   12,909.38x = 308,239,470.56
5. Step 5: Solve for x
   x = 308,239,470.56/12,909.38
6. Step 6: Final answer
   x = 23,877.18