Finding the Third Proportional to 2,287,221 and 4,972,839

Step by Step Solution

1. Step 1: Write the proportion equation
   2,287,221 : 4,972,839 = 4,972,839 : x
2. Step 2: Convert to fraction form
   2,287,221/4,972,839 = 4,972,839/x
3. Step 3: Cross multiply
   2,287,221x = 4,972,839 × 4,972,839
4. Step 4: Simplify right side
   2,287,221x = 24,729,127,719,921
5. Step 5: Solve for x
   x = 24,729,127,719,921/2,287,221
6. Step 6: Final answer
   x = 10,811,866.33