Finding the Third Proportional to 3,936,394 and 8,476,508

Step by Step Solution

1. Step 1: Write the proportion equation
   3,936,394 : 8,476,508 = 8,476,508 : x
2. Step 2: Convert to fraction form
   3,936,394/8,476,508 = 8,476,508/x
3. Step 3: Cross multiply
   3,936,394x = 8,476,508 × 8,476,508
4. Step 4: Simplify right side
   3,936,394x = 71,851,187,874,064
5. Step 5: Solve for x
   x = 71,851,187,874,064/3,936,394
6. Step 6: Final answer
   x = 18,253,047.81