Finding the Third Proportional to 2,560,399.88 and 5,486,002.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,560,399.88 : 5,486,002.17 = 5,486,002.17 : x
2. Step 2: Convert to fraction form
   2,560,399.88/5,486,002.17 = 5,486,002.17/x
3. Step 3: Cross multiply
   2,560,399.88x = 5,486,002.17 × 5,486,002.17
4. Step 4: Simplify right side
   2,560,399.88x = 30,096,219,829,817.22
5. Step 5: Solve for x
   x = 30,096,219,829,817.22/2,560,399.88
6. Step 6: Final answer
   x = 11,754,499.80