Finding the Third Proportional to 628,920 and 1,357,470

Step by Step Solution

1. Step 1: Write the proportion equation
   628,920 : 1,357,470 = 1,357,470 : x
2. Step 2: Convert to fraction form
   628,920/1,357,470 = 1,357,470/x
3. Step 3: Cross multiply
   628,920x = 1,357,470 × 1,357,470
4. Step 4: Simplify right side
   628,920x = 1,842,724,800,900
5. Step 5: Solve for x
   x = 1,842,724,800,900/628,920
6. Step 6: Final answer
   x = 2,929,982.83