Finding the Third Proportional to 542,743.50 and 810,014.50

Step by Step Solution

1. Step 1: Write the proportion equation
   542,743.50 : 810,014.50 = 810,014.50 : x
2. Step 2: Convert to fraction form
   542,743.50/810,014.50 = 810,014.50/x
3. Step 3: Cross multiply
   542,743.50x = 810,014.50 × 810,014.50
4. Step 4: Simplify right side
   542,743.50x = 656,123,490,210.25
5. Step 5: Solve for x
   x = 656,123,490,210.25/542,743.50
6. Step 6: Final answer
   x = 1,208,901.61