Finding the Third Proportional to 2,706,638 and 5,636,474

Step by Step Solution

1. Step 1: Write the proportion equation
   2,706,638 : 5,636,474 = 5,636,474 : x
2. Step 2: Convert to fraction form
   2,706,638/5,636,474 = 5,636,474/x
3. Step 3: Cross multiply
   2,706,638x = 5,636,474 × 5,636,474
4. Step 4: Simplify right side
   2,706,638x = 31,769,839,152,676
5. Step 5: Solve for x
   x = 31,769,839,152,676/2,706,638
6. Step 6: Final answer
   x = 11,737,749.62