Finding the Third Proportional to 381,528 and 822,105

Step by Step Solution

1. Step 1: Write the proportion equation
   381,528 : 822,105 = 822,105 : x
2. Step 2: Convert to fraction form
   381,528/822,105 = 822,105/x
3. Step 3: Cross multiply
   381,528x = 822,105 × 822,105
4. Step 4: Simplify right side
   381,528x = 675,856,631,025
5. Step 5: Solve for x
   x = 675,856,631,025/381,528
6. Step 6: Final answer
   x = 1,771,447.00