Finding the Third Proportional to 16,642.13 and 25,840.69

Step by Step Solution

1. Step 1: Write the proportion equation
   16,642.13 : 25,840.69 = 25,840.69 : x
2. Step 2: Convert to fraction form
   16,642.13/25,840.69 = 25,840.69/x
3. Step 3: Cross multiply
   16,642.13x = 25,840.69 × 25,840.69
4. Step 4: Simplify right side
   16,642.13x = 667,741,130.47
5. Step 5: Solve for x
   x = 667,741,130.47/16,642.13
6. Step 6: Final answer
   x = 40,123.55