Finding the Third Proportional to 20,986,452 and 30,879,556

Step by Step Solution

1. Step 1: Write the proportion equation
   20,986,452 : 30,879,556 = 30,879,556 : x
2. Step 2: Convert to fraction form
   20,986,452/30,879,556 = 30,879,556/x
3. Step 3: Cross multiply
   20,986,452x = 30,879,556 × 30,879,556
4. Step 4: Simplify right side
   20,986,452x = 953,546,978,757,136
5. Step 5: Solve for x
   x = 953,546,978,757,136/20,986,452
6. Step 6: Final answer
   x = 45,436,311.90