Finding the Third Proportional to 557,388 and 1,221,084

Step by Step Solution

1. Step 1: Write the proportion equation
   557,388 : 1,221,084 = 1,221,084 : x
2. Step 2: Convert to fraction form
   557,388/1,221,084 = 1,221,084/x
3. Step 3: Cross multiply
   557,388x = 1,221,084 × 1,221,084
4. Step 4: Simplify right side
   557,388x = 1,491,046,135,056
5. Step 5: Solve for x
   x = 1,491,046,135,056/557,388
6. Step 6: Final answer
   x = 2,675,059.63