Finding the Third Proportional to 627,638 and 1,371,906

Step by Step Solution

1. Step 1: Write the proportion equation
   627,638 : 1,371,906 = 1,371,906 : x
2. Step 2: Convert to fraction form
   627,638/1,371,906 = 1,371,906/x
3. Step 3: Cross multiply
   627,638x = 1,371,906 × 1,371,906
4. Step 4: Simplify right side
   627,638x = 1,882,126,072,836
5. Step 5: Solve for x
   x = 1,882,126,072,836/627,638
6. Step 6: Final answer
   x = 2,998,744.62