Finding the Third Proportional to 2,545,479,877.50 and 5,479,987,567.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,545,479,877.50 : 5,479,987,567.50 = 5,479,987,567.50 : x
2. Step 2: Convert to fraction form
   2,545,479,877.50/5,479,987,567.50 = 5,479,987,567.50/x
3. Step 3: Cross multiply
   2,545,479,877.50x = 5,479,987,567.50 × 5,479,987,567.50
4. Step 4: Simplify right side
   2,545,479,877.50x = 30,030,263,739,954,565,120
5. Step 5: Solve for x
   x = 30,030,263,739,954,565,120/2,545,479,877.50
6. Step 6: Final answer
   x = 11,797,486,205.02