Finding the Third Proportional to 12,839,078 and 19,944,205

Step by Step Solution

1. Step 1: Write the proportion equation
   12,839,078 : 19,944,205 = 19,944,205 : x
2. Step 2: Convert to fraction form
   12,839,078/19,944,205 = 19,944,205/x
3. Step 3: Cross multiply
   12,839,078x = 19,944,205 × 19,944,205
4. Step 4: Simplify right side
   12,839,078x = 397,771,313,082,025
5. Step 5: Solve for x
   x = 397,771,313,082,025/12,839,078
6. Step 6: Final answer
   x = 30,981,298.90