Finding the Third Proportional to 628,789 and 1,357,631

Step by Step Solution

1. Step 1: Write the proportion equation
   628,789 : 1,357,631 = 1,357,631 : x
2. Step 2: Convert to fraction form
   628,789/1,357,631 = 1,357,631/x
3. Step 3: Cross multiply
   628,789x = 1,357,631 × 1,357,631
4. Step 4: Simplify right side
   628,789x = 1,843,161,932,161
5. Step 5: Solve for x
   x = 1,843,161,932,161/628,789
6. Step 6: Final answer
   x = 2,931,288.45