Finding the Third Proportional to 745,440 and 1,637,320

Step by Step Solution

1. Step 1: Write the proportion equation
   745,440 : 1,637,320 = 1,637,320 : x
2. Step 2: Convert to fraction form
   745,440/1,637,320 = 1,637,320/x
3. Step 3: Cross multiply
   745,440x = 1,637,320 × 1,637,320
4. Step 4: Simplify right side
   745,440x = 2,680,816,782,400
5. Step 5: Solve for x
   x = 2,680,816,782,400/745,440
6. Step 6: Final answer
   x = 3,596,287.81