Finding the Third Proportional to 2,089,718 and 4,267,990

Step by Step Solution

1. Step 1: Write the proportion equation
   2,089,718 : 4,267,990 = 4,267,990 : x
2. Step 2: Convert to fraction form
   2,089,718/4,267,990 = 4,267,990/x
3. Step 3: Cross multiply
   2,089,718x = 4,267,990 × 4,267,990
4. Step 4: Simplify right side
   2,089,718x = 18,215,738,640,100
5. Step 5: Solve for x
   x = 18,215,738,640,100/2,089,718
6. Step 6: Final answer
   x = 8,716,840.57