Finding the Third Proportional to 578,998 and 1,275,792

Step by Step Solution

1. Step 1: Write the proportion equation
   578,998 : 1,275,792 = 1,275,792 : x
2. Step 2: Convert to fraction form
   578,998/1,275,792 = 1,275,792/x
3. Step 3: Cross multiply
   578,998x = 1,275,792 × 1,275,792
4. Step 4: Simplify right side
   578,998x = 1,627,645,227,264
5. Step 5: Solve for x
   x = 1,627,645,227,264/578,998
6. Step 6: Final answer
   x = 2,811,141.36