Finding the Third Proportional to 17,139 and 36,540

Step by Step Solution

1. Step 1: Write the proportion equation
   17,139 : 36,540 = 36,540 : x
2. Step 2: Convert to fraction form
   17,139/36,540 = 36,540/x
3. Step 3: Cross multiply
   17,139x = 36,540 × 36,540
4. Step 4: Simplify right side
   17,139x = 1,335,171,600
5. Step 5: Solve for x
   x = 1,335,171,600/17,139
6. Step 6: Final answer
   x = 77,902.54