Finding the Third Proportional to 11,399.50 and 17,257

Step by Step Solution

1. Step 1: Write the proportion equation
   11,399.50 : 17,257 = 17,257 : x
2. Step 2: Convert to fraction form
   11,399.50/17,257 = 17,257/x
3. Step 3: Cross multiply
   11,399.50x = 17,257 × 17,257
4. Step 4: Simplify right side
   11,399.50x = 297,804,049
5. Step 5: Solve for x
   x = 297,804,049/11,399.50
6. Step 6: Final answer
   x = 26,124.31