Finding the Third Proportional to 15,768 and 17,240

Step by Step Solution

1. Step 1: Write the proportion equation
   15,768 : 17,240 = 17,240 : x
2. Step 2: Convert to fraction form
   15,768/17,240 = 17,240/x
3. Step 3: Cross multiply
   15,768x = 17,240 × 17,240
4. Step 4: Simplify right side
   15,768x = 297,217,600
5. Step 5: Solve for x
   x = 297,217,600/15,768
6. Step 6: Final answer
   x = 18,849.42