Finding the Third Proportional to 164,207.25 and 355,401

Step by Step Solution

1. Step 1: Write the proportion equation
   164,207.25 : 355,401 = 355,401 : x
2. Step 2: Convert to fraction form
   164,207.25/355,401 = 355,401/x
3. Step 3: Cross multiply
   164,207.25x = 355,401 × 355,401
4. Step 4: Simplify right side
   164,207.25x = 126,309,870,801
5. Step 5: Solve for x
   x = 126,309,870,801/164,207.25
6. Step 6: Final answer
   x = 769,210.07