Finding the Third Proportional to 81,105 and 173,419

Step by Step Solution

1. Step 1: Write the proportion equation
   81,105 : 173,419 = 173,419 : x
2. Step 2: Convert to fraction form
   81,105/173,419 = 173,419/x
3. Step 3: Cross multiply
   81,105x = 173,419 × 173,419
4. Step 4: Simplify right side
   81,105x = 30,074,149,561
5. Step 5: Solve for x
   x = 30,074,149,561/81,105
6. Step 6: Final answer
   x = 370,805.12