Finding the Third Proportional to 680,564 and 1,044,638

Step by Step Solution

1. Step 1: Write the proportion equation
   680,564 : 1,044,638 = 1,044,638 : x
2. Step 2: Convert to fraction form
   680,564/1,044,638 = 1,044,638/x
3. Step 3: Cross multiply
   680,564x = 1,044,638 × 1,044,638
4. Step 4: Simplify right side
   680,564x = 1,091,268,551,044
5. Step 5: Solve for x
   x = 1,091,268,551,044/680,564
6. Step 6: Final answer
   x = 1,603,476.75