Finding the Third Proportional to 542,870 and 798,087

Step by Step Solution

1. Step 1: Write the proportion equation
   542,870 : 798,087 = 798,087 : x
2. Step 2: Convert to fraction form
   542,870/798,087 = 798,087/x
3. Step 3: Cross multiply
   542,870x = 798,087 × 798,087
4. Step 4: Simplify right side
   542,870x = 636,942,859,569
5. Step 5: Solve for x
   x = 636,942,859,569/542,870
6. Step 6: Final answer
   x = 1,173,288.01