Finding the Third Proportional to 79,540 and 171,270

Step by Step Solution

1. Step 1: Write the proportion equation
   79,540 : 171,270 = 171,270 : x
2. Step 2: Convert to fraction form
   79,540/171,270 = 171,270/x
3. Step 3: Cross multiply
   79,540x = 171,270 × 171,270
4. Step 4: Simplify right side
   79,540x = 29,333,412,900
5. Step 5: Solve for x
   x = 29,333,412,900/79,540
6. Step 6: Final answer
   x = 368,788.19