Finding the Third Proportional to 542,130 and 724,500

Step by Step Solution

1. Step 1: Write the proportion equation
   542,130 : 724,500 = 724,500 : x
2. Step 2: Convert to fraction form
   542,130/724,500 = 724,500/x
3. Step 3: Cross multiply
   542,130x = 724,500 × 724,500
4. Step 4: Simplify right side
   542,130x = 524,900,250,000
5. Step 5: Solve for x
   x = 524,900,250,000/542,130
6. Step 6: Final answer
   x = 968,218.42