Finding the Third Proportional to 2,415,820 and 5,209,923

Step by Step Solution

1. Step 1: Write the proportion equation
   2,415,820 : 5,209,923 = 5,209,923 : x
2. Step 2: Convert to fraction form
   2,415,820/5,209,923 = 5,209,923/x
3. Step 3: Cross multiply
   2,415,820x = 5,209,923 × 5,209,923
4. Step 4: Simplify right side
   2,415,820x = 27,143,297,665,929
5. Step 5: Solve for x
   x = 27,143,297,665,929/2,415,820
6. Step 6: Final answer
   x = 11,235,645.73