Finding the Third Proportional to 2,120,900 and 3,212,238

Step by Step Solution

1. Step 1: Write the proportion equation
   2,120,900 : 3,212,238 = 3,212,238 : x
2. Step 2: Convert to fraction form
   2,120,900/3,212,238 = 3,212,238/x
3. Step 3: Cross multiply
   2,120,900x = 3,212,238 × 3,212,238
4. Step 4: Simplify right side
   2,120,900x = 10,318,472,968,644
5. Step 5: Solve for x
   x = 10,318,472,968,644/2,120,900
6. Step 6: Final answer
   x = 4,865,138.84