Finding the Third Proportional to 542,480 and 789,096

Step by Step Solution

1. Step 1: Write the proportion equation
   542,480 : 789,096 = 789,096 : x
2. Step 2: Convert to fraction form
   542,480/789,096 = 789,096/x
3. Step 3: Cross multiply
   542,480x = 789,096 × 789,096
4. Step 4: Simplify right side
   542,480x = 622,672,497,216
5. Step 5: Solve for x
   x = 622,672,497,216/542,480
6. Step 6: Final answer
   x = 1,147,825.72