Finding the Third Proportional to 2,138,808 and 4,454,538

Step by Step Solution

1. Step 1: Write the proportion equation
   2,138,808 : 4,454,538 = 4,454,538 : x
2. Step 2: Convert to fraction form
   2,138,808/4,454,538 = 4,454,538/x
3. Step 3: Cross multiply
   2,138,808x = 4,454,538 × 4,454,538
4. Step 4: Simplify right side
   2,138,808x = 19,842,908,793,444
5. Step 5: Solve for x
   x = 19,842,908,793,444/2,138,808
6. Step 6: Final answer
   x = 9,277,554.97