Finding the Third Proportional to 322,326 and 453,105

Step by Step Solution

1. Step 1: Write the proportion equation
   322,326 : 453,105 = 453,105 : x
2. Step 2: Convert to fraction form
   322,326/453,105 = 453,105/x
3. Step 3: Cross multiply
   322,326x = 453,105 × 453,105
4. Step 4: Simplify right side
   322,326x = 205,304,141,025
5. Step 5: Solve for x
   x = 205,304,141,025/322,326
6. Step 6: Final answer
   x = 636,945.64