Finding the Third Proportional to 2,489,042 and 5,428,586

Step by Step Solution

1. Step 1: Write the proportion equation
   2,489,042 : 5,428,586 = 5,428,586 : x
2. Step 2: Convert to fraction form
   2,489,042/5,428,586 = 5,428,586/x
3. Step 3: Cross multiply
   2,489,042x = 5,428,586 × 5,428,586
4. Step 4: Simplify right side
   2,489,042x = 29,469,545,959,396
5. Step 5: Solve for x
   x = 29,469,545,959,396/2,489,042
6. Step 6: Final answer
   x = 11,839,714.22