Finding the Third Proportional to 721,242 and 1,542,540

Step by Step Solution

1. Step 1: Write the proportion equation
   721,242 : 1,542,540 = 1,542,540 : x
2. Step 2: Convert to fraction form
   721,242/1,542,540 = 1,542,540/x
3. Step 3: Cross multiply
   721,242x = 1,542,540 × 1,542,540
4. Step 4: Simplify right side
   721,242x = 2,379,429,651,600
5. Step 5: Solve for x
   x = 2,379,429,651,600/721,242
6. Step 6: Final answer
   x = 3,299,072.50