Finding the Third Proportional to 3,968,393 and 8,613,298

Step by Step Solution

1. Step 1: Write the proportion equation
   3,968,393 : 8,613,298 = 8,613,298 : x
2. Step 2: Convert to fraction form
   3,968,393/8,613,298 = 8,613,298/x
3. Step 3: Cross multiply
   3,968,393x = 8,613,298 × 8,613,298
4. Step 4: Simplify right side
   3,968,393x = 74,188,902,436,804
5. Step 5: Solve for x
   x = 74,188,902,436,804/3,968,393
6. Step 6: Final answer
   x = 18,694,948.42