Finding the Third Proportional to 542,456 and 789,060

Step by Step Solution

1. Step 1: Write the proportion equation
   542,456 : 789,060 = 789,060 : x
2. Step 2: Convert to fraction form
   542,456/789,060 = 789,060/x
3. Step 3: Cross multiply
   542,456x = 789,060 × 789,060
4. Step 4: Simplify right side
   542,456x = 622,615,683,600
5. Step 5: Solve for x
   x = 622,615,683,600/542,456
6. Step 6: Final answer
   x = 1,147,771.77