Finding the Third Proportional to 628,790 and 1,357,636

Step by Step Solution

1. Step 1: Write the proportion equation
   628,790 : 1,357,636 = 1,357,636 : x
2. Step 2: Convert to fraction form
   628,790/1,357,636 = 1,357,636/x
3. Step 3: Cross multiply
   628,790x = 1,357,636 × 1,357,636
4. Step 4: Simplify right side
   628,790x = 1,843,175,508,496
5. Step 5: Solve for x
   x = 1,843,175,508,496/628,790
6. Step 6: Final answer
   x = 2,931,305.38