Finding the Third Proportional to 3,968,396 and 8,613,304

Step by Step Solution

1. Step 1: Write the proportion equation
   3,968,396 : 8,613,304 = 8,613,304 : x
2. Step 2: Convert to fraction form
   3,968,396/8,613,304 = 8,613,304/x
3. Step 3: Cross multiply
   3,968,396x = 8,613,304 × 8,613,304
4. Step 4: Simplify right side
   3,968,396x = 74,189,005,796,416
5. Step 5: Solve for x
   x = 74,189,005,796,416/3,968,396
6. Step 6: Final answer
   x = 18,694,960.33