Finding the Third Proportional to 627,703 and 1,288,453

Step by Step Solution

1. Step 1: Write the proportion equation
   627,703 : 1,288,453 = 1,288,453 : x
2. Step 2: Convert to fraction form
   627,703/1,288,453 = 1,288,453/x
3. Step 3: Cross multiply
   627,703x = 1,288,453 × 1,288,453
4. Step 4: Simplify right side
   627,703x = 1,660,111,133,209
5. Step 5: Solve for x
   x = 1,660,111,133,209/627,703
6. Step 6: Final answer
   x = 2,644,739.84