Finding the Third Proportional to 2,209,287 and 3,428,855

Step by Step Solution

1. Step 1: Write the proportion equation
   2,209,287 : 3,428,855 = 3,428,855 : x
2. Step 2: Convert to fraction form
   2,209,287/3,428,855 = 3,428,855/x
3. Step 3: Cross multiply
   2,209,287x = 3,428,855 × 3,428,855
4. Step 4: Simplify right side
   2,209,287x = 11,757,046,611,025
5. Step 5: Solve for x
   x = 11,757,046,611,025/2,209,287
6. Step 6: Final answer
   x = 5,321,647.49