Finding the Third Proportional to 172,401 and 359,544

Step by Step Solution

1. Step 1: Write the proportion equation
   172,401 : 359,544 = 359,544 : x
2. Step 2: Convert to fraction form
   172,401/359,544 = 359,544/x
3. Step 3: Cross multiply
   172,401x = 359,544 × 359,544
4. Step 4: Simplify right side
   172,401x = 129,271,887,936
5. Step 5: Solve for x
   x = 129,271,887,936/172,401
6. Step 6: Final answer
   x = 749,832.59