Finding the Third Proportional to 3,639,086,840 and 5,200,349,920

Step by Step Solution

1. Step 1: Write the proportion equation
   3,639,086,840 : 5,200,349,920 = 5,200,349,920 : x
2. Step 2: Convert to fraction form
   3,639,086,840/5,200,349,920 = 5,200,349,920/x
3. Step 3: Cross multiply
   3,639,086,840x = 5,200,349,920 × 5,200,349,920
4. Step 4: Simplify right side
   3,639,086,840x = 27,043,639,290,444,005,376
5. Step 5: Solve for x
   x = 27,043,639,290,444,005,376/3,639,086,840
6. Step 6: Final answer
   x = 7,431,435,543.99