Finding the Third Proportional to 168,223 and 355,401

Step by Step Solution

1. Step 1: Write the proportion equation
   168,223 : 355,401 = 355,401 : x
2. Step 2: Convert to fraction form
   168,223/355,401 = 355,401/x
3. Step 3: Cross multiply
   168,223x = 355,401 × 355,401
4. Step 4: Simplify right side
   168,223x = 126,309,870,801
5. Step 5: Solve for x
   x = 126,309,870,801/168,223
6. Step 6: Final answer
   x = 750,847.81