Finding the Third Proportional to 3,639,086,880 and 5,200,349,991

Step by Step Solution

1. Step 1: Write the proportion equation
   3,639,086,880 : 5,200,349,991 = 5,200,349,991 : x
2. Step 2: Convert to fraction form
   3,639,086,880/5,200,349,991 = 5,200,349,991/x
3. Step 3: Cross multiply
   3,639,086,880x = 5,200,349,991 × 5,200,349,991
4. Step 4: Simplify right side
   3,639,086,880x = 27,043,640,028,893,700,096
5. Step 5: Solve for x
   x = 27,043,640,028,893,700,096/3,639,086,880
6. Step 6: Final answer
   x = 7,431,435,665.23