Finding the Third Proportional to 11,920.41 and 17,515.69

Step by Step Solution

1. Step 1: Write the proportion equation
   11,920.41 : 17,515.69 = 17,515.69 : x
2. Step 2: Convert to fraction form
   11,920.41/17,515.69 = 17,515.69/x
3. Step 3: Cross multiply
   11,920.41x = 17,515.69 × 17,515.69
4. Step 4: Simplify right side
   11,920.41x = 306,799,308.60
5. Step 5: Solve for x
   x = 306,799,308.60/11,920.41
6. Step 6: Final answer
   x = 25,737.32