Finding the Third Proportional to 542,678 and 1,157,404

Step by Step Solution

1. Step 1: Write the proportion equation
   542,678 : 1,157,404 = 1,157,404 : x
2. Step 2: Convert to fraction form
   542,678/1,157,404 = 1,157,404/x
3. Step 3: Cross multiply
   542,678x = 1,157,404 × 1,157,404
4. Step 4: Simplify right side
   542,678x = 1,339,584,019,216
5. Step 5: Solve for x
   x = 1,339,584,019,216/542,678
6. Step 6: Final answer
   x = 2,468,469.37