Finding the Third Proportional to 16,642.13 and 21,606.75

Step by Step Solution

1. Step 1: Write the proportion equation
   16,642.13 : 21,606.75 = 21,606.75 : x
2. Step 2: Convert to fraction form
   16,642.13/21,606.75 = 21,606.75/x
3. Step 3: Cross multiply
   16,642.13x = 21,606.75 × 21,606.75
4. Step 4: Simplify right side
   16,642.13x = 466,851,645.56
5. Step 5: Solve for x
   x = 466,851,645.56/16,642.13
6. Step 6: Final answer
   x = 28,052.41