Finding the Third Proportional to 196,938 and 401,105

Step by Step Solution

1. Step 1: Write the proportion equation
   196,938 : 401,105 = 401,105 : x
2. Step 2: Convert to fraction form
   196,938/401,105 = 401,105/x
3. Step 3: Cross multiply
   196,938x = 401,105 × 401,105
4. Step 4: Simplify right side
   196,938x = 160,885,221,025
5. Step 5: Solve for x
   x = 160,885,221,025/196,938
6. Step 6: Final answer
   x = 816,933.35