Finding the Third Proportional to 2,488,995 and 5,428,498.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,488,995 : 5,428,498.50 = 5,428,498.50 : x
2. Step 2: Convert to fraction form
   2,488,995/5,428,498.50 = 5,428,498.50/x
3. Step 3: Cross multiply
   2,488,995x = 5,428,498.50 × 5,428,498.50
4. Step 4: Simplify right side
   2,488,995x = 29,468,595,964,502.25
5. Step 5: Solve for x
   x = 29,468,595,964,502.25/2,488,995
6. Step 6: Final answer
   x = 11,839,556.11