Finding the Third Proportional to 81,360 and 171,468

Step by Step Solution

1. Step 1: Write the proportion equation
   81,360 : 171,468 = 171,468 : x
2. Step 2: Convert to fraction form
   81,360/171,468 = 171,468/x
3. Step 3: Cross multiply
   81,360x = 171,468 × 171,468
4. Step 4: Simplify right side
   81,360x = 29,401,275,024
5. Step 5: Solve for x
   x = 29,401,275,024/81,360
6. Step 6: Final answer
   x = 361,372.60