Finding the Third Proportional to 3,977,494,605 and 5,530,388,321

Step by Step Solution

1. Step 1: Write the proportion equation
   3,977,494,605 : 5,530,388,321 = 5,530,388,321 : x
2. Step 2: Convert to fraction form
   3,977,494,605/5,530,388,321 = 5,530,388,321/x
3. Step 3: Cross multiply
   3,977,494,605x = 5,530,388,321 × 5,530,388,321
4. Step 4: Simplify right side
   3,977,494,605x = 30,585,194,981,053,198,336
5. Step 5: Solve for x
   x = 30,585,194,981,053,198,336/3,977,494,605
6. Step 6: Final answer
   x = 7,689,562,907.92