Finding the Third Proportional to 172,242 and 369,401

Step by Step Solution

1. Step 1: Write the proportion equation
   172,242 : 369,401 = 369,401 : x
2. Step 2: Convert to fraction form
   172,242/369,401 = 369,401/x
3. Step 3: Cross multiply
   172,242x = 369,401 × 369,401
4. Step 4: Simplify right side
   172,242x = 136,457,098,801
5. Step 5: Solve for x
   x = 136,457,098,801/172,242
6. Step 6: Final answer
   x = 792,240.56