Finding the Third Proportional to 80,436 and 171,555

Step by Step Solution

1. Step 1: Write the proportion equation
   80,436 : 171,555 = 171,555 : x
2. Step 2: Convert to fraction form
   80,436/171,555 = 171,555/x
3. Step 3: Cross multiply
   80,436x = 171,555 × 171,555
4. Step 4: Simplify right side
   80,436x = 29,431,118,025
5. Step 5: Solve for x
   x = 29,431,118,025/80,436
6. Step 6: Final answer
   x = 365,894.85