Finding the Third Proportional to 728,378 and 1,142,610

Step by Step Solution

1. Step 1: Write the proportion equation
   728,378 : 1,142,610 = 1,142,610 : x
2. Step 2: Convert to fraction form
   728,378/1,142,610 = 1,142,610/x
3. Step 3: Cross multiply
   728,378x = 1,142,610 × 1,142,610
4. Step 4: Simplify right side
   728,378x = 1,305,557,612,100
5. Step 5: Solve for x
   x = 1,305,557,612,100/728,378
6. Step 6: Final answer
   x = 1,792,417.69