Finding the Third Proportional to 2,138,784 and 4,454,488

Step by Step Solution

1. Step 1: Write the proportion equation
   2,138,784 : 4,454,488 = 4,454,488 : x
2. Step 2: Convert to fraction form
   2,138,784/4,454,488 = 4,454,488/x
3. Step 3: Cross multiply
   2,138,784x = 4,454,488 × 4,454,488
4. Step 4: Simplify right side
   2,138,784x = 19,842,463,342,144
5. Step 5: Solve for x
   x = 19,842,463,342,144/2,138,784
6. Step 6: Final answer
   x = 9,277,450.80