Finding the Third Proportional to 2,120,336 and 4,238,944

Step by Step Solution

1. Step 1: Write the proportion equation
   2,120,336 : 4,238,944 = 4,238,944 : x
2. Step 2: Convert to fraction form
   2,120,336/4,238,944 = 4,238,944/x
3. Step 3: Cross multiply
   2,120,336x = 4,238,944 × 4,238,944
4. Step 4: Simplify right side
   2,120,336x = 17,968,646,235,136
5. Step 5: Solve for x
   x = 17,968,646,235,136/2,120,336
6. Step 6: Final answer
   x = 8,474,433.41