Finding the Third Proportional to 17,139.50 and 25,891.75

Step by Step Solution

1. Step 1: Write the proportion equation
   17,139.50 : 25,891.75 = 25,891.75 : x
2. Step 2: Convert to fraction form
   17,139.50/25,891.75 = 25,891.75/x
3. Step 3: Cross multiply
   17,139.50x = 25,891.75 × 25,891.75
4. Step 4: Simplify right side
   17,139.50x = 670,382,718.06
5. Step 5: Solve for x
   x = 670,382,718.06/17,139.50
6. Step 6: Final answer
   x = 39,113.32