Finding the Third Proportional to 195,336 and 396,105

Step by Step Solution

1. Step 1: Write the proportion equation
   195,336 : 396,105 = 396,105 : x
2. Step 2: Convert to fraction form
   195,336/396,105 = 396,105/x
3. Step 3: Cross multiply
   195,336x = 396,105 × 396,105
4. Step 4: Simplify right side
   195,336x = 156,899,171,025
5. Step 5: Solve for x
   x = 156,899,171,025/195,336
6. Step 6: Final answer
   x = 803,227.11