Finding the Third Proportional to 542,862 and 779,017.50

Step by Step Solution

1. Step 1: Write the proportion equation
   542,862 : 779,017.50 = 779,017.50 : x
2. Step 2: Convert to fraction form
   542,862/779,017.50 = 779,017.50/x
3. Step 3: Cross multiply
   542,862x = 779,017.50 × 779,017.50
4. Step 4: Simplify right side
   542,862x = 606,868,265,306.25
5. Step 5: Solve for x
   x = 606,868,265,306.25/542,862
6. Step 6: Final answer
   x = 1,117,905.22