Finding the Third Proportional to 3,998,556 and 8,707,032

Step by Step Solution

1. Step 1: Write the proportion equation
   3,998,556 : 8,707,032 = 8,707,032 : x
2. Step 2: Convert to fraction form
   3,998,556/8,707,032 = 8,707,032/x
3. Step 3: Cross multiply
   3,998,556x = 8,707,032 × 8,707,032
4. Step 4: Simplify right side
   3,998,556x = 75,812,406,249,024
5. Step 5: Solve for x
   x = 75,812,406,249,024/3,998,556
6. Step 6: Final answer
   x = 18,959,946.10