Finding the Third Proportional to 1,919,637 and 4,200,858

Step by Step Solution

1. Step 1: Write the proportion equation
   1,919,637 : 4,200,858 = 4,200,858 : x
2. Step 2: Convert to fraction form
   1,919,637/4,200,858 = 4,200,858/x
3. Step 3: Cross multiply
   1,919,637x = 4,200,858 × 4,200,858
4. Step 4: Simplify right side
   1,919,637x = 17,647,207,936,164
5. Step 5: Solve for x
   x = 17,647,207,936,164/1,919,637
6. Step 6: Final answer
   x = 9,192,992.18