Finding the Third Proportional to 3,968,394 and 8,613,300

Step by Step Solution

1. Step 1: Write the proportion equation
   3,968,394 : 8,613,300 = 8,613,300 : x
2. Step 2: Convert to fraction form
   3,968,394/8,613,300 = 8,613,300/x
3. Step 3: Cross multiply
   3,968,394x = 8,613,300 × 8,613,300
4. Step 4: Simplify right side
   3,968,394x = 74,188,936,890,000
5. Step 5: Solve for x
   x = 74,188,936,890,000/3,968,394
6. Step 6: Final answer
   x = 18,694,952.39