Finding the Third Proportional to 557,392 and 1,221,092

Step by Step Solution

1. Step 1: Write the proportion equation
   557,392 : 1,221,092 = 1,221,092 : x
2. Step 2: Convert to fraction form
   557,392/1,221,092 = 1,221,092/x
3. Step 3: Cross multiply
   557,392x = 1,221,092 × 1,221,092
4. Step 4: Simplify right side
   557,392x = 1,491,065,672,464
5. Step 5: Solve for x
   x = 1,491,065,672,464/557,392
6. Step 6: Final answer
   x = 2,675,075.48