Finding the Third Proportional to 1,405,838 and 2,178,741

Step by Step Solution

1. Step 1: Write the proportion equation
   1,405,838 : 2,178,741 = 2,178,741 : x
2. Step 2: Convert to fraction form
   1,405,838/2,178,741 = 2,178,741/x
3. Step 3: Cross multiply
   1,405,838x = 2,178,741 × 2,178,741
4. Step 4: Simplify right side
   1,405,838x = 4,746,912,345,081
5. Step 5: Solve for x
   x = 4,746,912,345,081/1,405,838
6. Step 6: Final answer
   x = 3,376,571.37