Finding the Third Proportional to 2,019,978 and 4,354,836

Step by Step Solution

1. Step 1: Write the proportion equation
   2,019,978 : 4,354,836 = 4,354,836 : x
2. Step 2: Convert to fraction form
   2,019,978/4,354,836 = 4,354,836/x
3. Step 3: Cross multiply
   2,019,978x = 4,354,836 × 4,354,836
4. Step 4: Simplify right side
   2,019,978x = 18,964,596,586,896
5. Step 5: Solve for x
   x = 18,964,596,586,896/2,019,978
6. Step 6: Final answer
   x = 9,388,516.40