Finding the Third Proportional to 11,417.75 and 17,915.38

Step by Step Solution

1. Step 1: Write the proportion equation
   11,417.75 : 17,915.38 = 17,915.38 : x
2. Step 2: Convert to fraction form
   11,417.75/17,915.38 = 17,915.38/x
3. Step 3: Cross multiply
   11,417.75x = 17,915.38 × 17,915.38
4. Step 4: Simplify right side
   11,417.75x = 320,960,661.39
5. Step 5: Solve for x
   x = 320,960,661.39/11,417.75
6. Step 6: Final answer
   x = 28,110.68