Finding the Third Proportional to 2,161,878 and 5,004,878

Step by Step Solution

1. Step 1: Write the proportion equation
   2,161,878 : 5,004,878 = 5,004,878 : x
2. Step 2: Convert to fraction form
   2,161,878/5,004,878 = 5,004,878/x
3. Step 3: Cross multiply
   2,161,878x = 5,004,878 × 5,004,878
4. Step 4: Simplify right side
   2,161,878x = 25,048,803,794,884
5. Step 5: Solve for x
   x = 25,048,803,794,884/2,161,878
6. Step 6: Final answer
   x = 11,586,594.52