Finding the Third Proportional to 2,217,686 and 4,776,436

Step by Step Solution

1. Step 1: Write the proportion equation
   2,217,686 : 4,776,436 = 4,776,436 : x
2. Step 2: Convert to fraction form
   2,217,686/4,776,436 = 4,776,436/x
3. Step 3: Cross multiply
   2,217,686x = 4,776,436 × 4,776,436
4. Step 4: Simplify right side
   2,217,686x = 22,814,340,862,096
5. Step 5: Solve for x
   x = 22,814,340,862,096/2,217,686
6. Step 6: Final answer
   x = 10,287,453.17