Finding the Third Proportional to 2,215,781 and 4,819,790

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215,781 : 4,819,790 = 4,819,790 : x
2. Step 2: Convert to fraction form
   2,215,781/4,819,790 = 4,819,790/x
3. Step 3: Cross multiply
   2,215,781x = 4,819,790 × 4,819,790
4. Step 4: Simplify right side
   2,215,781x = 23,230,375,644,100
5. Step 5: Solve for x
   x = 23,230,375,644,100/2,215,781
6. Step 6: Final answer
   x = 10,484,057.61