Finding the Third Proportional to 1,986,742 and 4,290,992

Step by Step Solution

1. Step 1: Write the proportion equation
   1,986,742 : 4,290,992 = 4,290,992 : x
2. Step 2: Convert to fraction form
   1,986,742/4,290,992 = 4,290,992/x
3. Step 3: Cross multiply
   1,986,742x = 4,290,992 × 4,290,992
4. Step 4: Simplify right side
   1,986,742x = 18,412,612,344,064
5. Step 5: Solve for x
   x = 18,412,612,344,064/1,986,742
6. Step 6: Final answer
   x = 9,267,742.03