Finding the Third Proportional to 2,120,912 and 3,212,256

Step by Step Solution

1. Step 1: Write the proportion equation
   2,120,912 : 3,212,256 = 3,212,256 : x
2. Step 2: Convert to fraction form
   2,120,912/3,212,256 = 3,212,256/x
3. Step 3: Cross multiply
   2,120,912x = 3,212,256 × 3,212,256
4. Step 4: Simplify right side
   2,120,912x = 10,318,588,609,536
5. Step 5: Solve for x
   x = 10,318,588,609,536/2,120,912
6. Step 6: Final answer
   x = 4,865,165.84