Finding the Third Proportional to 1,869,978 and 4,039,008

Step by Step Solution

1. Step 1: Write the proportion equation
   1,869,978 : 4,039,008 = 4,039,008 : x
2. Step 2: Convert to fraction form
   1,869,978/4,039,008 = 4,039,008/x
3. Step 3: Cross multiply
   1,869,978x = 4,039,008 × 4,039,008
4. Step 4: Simplify right side
   1,869,978x = 16,313,585,624,064
5. Step 5: Solve for x
   x = 16,313,585,624,064/1,869,978
6. Step 6: Final answer
   x = 8,723,945.21