Finding the Third Proportional to 3,977,494,606.50 and 5,530,388,323.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,977,494,606.50 : 5,530,388,323.25 = 5,530,388,323.25 : x
2. Step 2: Convert to fraction form
   3,977,494,606.50/5,530,388,323.25 = 5,530,388,323.25/x
3. Step 3: Cross multiply
   3,977,494,606.50x = 5,530,388,323.25 × 5,530,388,323.25
4. Step 4: Simplify right side
   3,977,494,606.50x = 30,585,195,005,939,945,472
5. Step 5: Solve for x
   x = 30,585,195,005,939,945,472/3,977,494,606.50
6. Step 6: Final answer
   x = 7,689,562,911.28