Finding the Third Proportional to 720,648.94 and 1,059,280.31

Step by Step Solution

1. Step 1: Write the proportion equation
   720,648.94 : 1,059,280.31 = 1,059,280.31 : x
2. Step 2: Convert to fraction form
   720,648.94/1,059,280.31 = 1,059,280.31/x
3. Step 3: Cross multiply
   720,648.94x = 1,059,280.31 × 1,059,280.31
4. Step 4: Simplify right side
   720,648.94x = 1,122,074,780,450.10
5. Step 5: Solve for x
   x = 1,122,074,780,450.10/720,648.94
6. Step 6: Final answer
   x = 1,557,033.84