Finding the Third Proportional to 17,708 and 27,640

Step by Step Solution

1. Step 1: Write the proportion equation
   17,708 : 27,640 = 27,640 : x
2. Step 2: Convert to fraction form
   17,708/27,640 = 27,640/x
3. Step 3: Cross multiply
   17,708x = 27,640 × 27,640
4. Step 4: Simplify right side
   17,708x = 763,969,600
5. Step 5: Solve for x
   x = 763,969,600/17,708
6. Step 6: Final answer
   x = 43,142.62