Finding the Third Proportional to 3,977,494,601.25 and 5,530,388,315.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,977,494,601.25 : 5,530,388,315.25 = 5,530,388,315.25 : x
2. Step 2: Convert to fraction form
   3,977,494,601.25/5,530,388,315.25 = 5,530,388,315.25/x
3. Step 3: Cross multiply
   3,977,494,601.25x = 5,530,388,315.25 × 5,530,388,315.25
4. Step 4: Simplify right side
   3,977,494,601.25x = 30,585,194,917,453,733,888
5. Step 5: Solve for x
   x = 30,585,194,917,453,733,888/3,977,494,601.25
6. Step 6: Final answer
   x = 7,689,562,899.18