Finding the Third Proportional to 3,639,086,838 and 5,200,349,917.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,639,086,838 : 5,200,349,917.50 = 5,200,349,917.50 : x
2. Step 2: Convert to fraction form
   3,639,086,838/5,200,349,917.50 = 5,200,349,917.50/x
3. Step 3: Cross multiply
   3,639,086,838x = 5,200,349,917.50 × 5,200,349,917.50
4. Step 4: Simplify right side
   3,639,086,838x = 27,043,639,264,442,257,408
5. Step 5: Solve for x
   x = 27,043,639,264,442,257,408/3,639,086,838
6. Step 6: Final answer
   x = 7,431,435,540.93