Finding the Third Proportional to 648,240 and 1,025,632

Step by Step Solution

1. Step 1: Write the proportion equation
   648,240 : 1,025,632 = 1,025,632 : x
2. Step 2: Convert to fraction form
   648,240/1,025,632 = 1,025,632/x
3. Step 3: Cross multiply
   648,240x = 1,025,632 × 1,025,632
4. Step 4: Simplify right side
   648,240x = 1,051,920,999,424
5. Step 5: Solve for x
   x = 1,051,920,999,424/648,240
6. Step 6: Final answer
   x = 1,622,733.86