Finding the Third Proportional to 2,120,454 and 4,419,756

Step by Step Solution

1. Step 1: Write the proportion equation
   2,120,454 : 4,419,756 = 4,419,756 : x
2. Step 2: Convert to fraction form
   2,120,454/4,419,756 = 4,419,756/x
3. Step 3: Cross multiply
   2,120,454x = 4,419,756 × 4,419,756
4. Step 4: Simplify right side
   2,120,454x = 19,534,243,099,536
5. Step 5: Solve for x
   x = 19,534,243,099,536/2,120,454
6. Step 6: Final answer
   x = 9,212,292.79