Finding the Third Proportional to 3,538,643,899.50 and 5,494,419,256.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,538,643,899.50 : 5,494,419,256.50 = 5,494,419,256.50 : x
2. Step 2: Convert to fraction form
   3,538,643,899.50/5,494,419,256.50 = 5,494,419,256.50/x
3. Step 3: Cross multiply
   3,538,643,899.50x = 5,494,419,256.50 × 5,494,419,256.50
4. Step 4: Simplify right side
   3,538,643,899.50x = 30,188,642,966,198,013,952
5. Step 5: Solve for x
   x = 30,188,642,966,198,013,952/3,538,643,899.50
6. Step 6: Final answer
   x = 8,531,133,344.74