Finding the Third Proportional to 1,854,678 and 3,908,620

Step by Step Solution

1. Step 1: Write the proportion equation
   1,854,678 : 3,908,620 = 3,908,620 : x
2. Step 2: Convert to fraction form
   1,854,678/3,908,620 = 3,908,620/x
3. Step 3: Cross multiply
   1,854,678x = 3,908,620 × 3,908,620
4. Step 4: Simplify right side
   1,854,678x = 15,277,310,304,400
5. Step 5: Solve for x
   x = 15,277,310,304,400/1,854,678
6. Step 6: Final answer
   x = 8,237,176.64