Finding the Third Proportional to 542,460 and 789,066

Step by Step Solution

1. Step 1: Write the proportion equation
   542,460 : 789,066 = 789,066 : x
2. Step 2: Convert to fraction form
   542,460/789,066 = 789,066/x
3. Step 3: Cross multiply
   542,460x = 789,066 × 789,066
4. Step 4: Simplify right side
   542,460x = 622,625,152,356
5. Step 5: Solve for x
   x = 622,625,152,356/542,460
6. Step 6: Final answer
   x = 1,147,780.76