Finding the Third Proportional to 811,728 and 1,809,792

Step by Step Solution

1. Step 1: Write the proportion equation
   811,728 : 1,809,792 = 1,809,792 : x
2. Step 2: Convert to fraction form
   811,728/1,809,792 = 1,809,792/x
3. Step 3: Cross multiply
   811,728x = 1,809,792 × 1,809,792
4. Step 4: Simplify right side
   811,728x = 3,275,347,083,264
5. Step 5: Solve for x
   x = 3,275,347,083,264/811,728
6. Step 6: Final answer
   x = 4,035,030.31