Finding the Third Proportional to 4,039,966 and 8,840,036

Step by Step Solution

1. Step 1: Write the proportion equation
   4,039,966 : 8,840,036 = 8,840,036 : x
2. Step 2: Convert to fraction form
   4,039,966/8,840,036 = 8,840,036/x
3. Step 3: Cross multiply
   4,039,966x = 8,840,036 × 8,840,036
4. Step 4: Simplify right side
   4,039,966x = 78,146,236,481,296
5. Step 5: Solve for x
   x = 78,146,236,481,296/4,039,966
6. Step 6: Final answer
   x = 19,343,290.63