Finding the Third Proportional to 2,738,990 and 4,257,998

Step by Step Solution

1. Step 1: Write the proportion equation
   2,738,990 : 4,257,998 = 4,257,998 : x
2. Step 2: Convert to fraction form
   2,738,990/4,257,998 = 4,257,998/x
3. Step 3: Cross multiply
   2,738,990x = 4,257,998 × 4,257,998
4. Step 4: Simplify right side
   2,738,990x = 18,130,546,968,004
5. Step 5: Solve for x
   x = 18,130,546,968,004/2,738,990
6. Step 6: Final answer
   x = 6,619,427.95