Finding the Third Proportional to 2,120,880 and 3,212,208

Step by Step Solution

1. Step 1: Write the proportion equation
   2,120,880 : 3,212,208 = 3,212,208 : x
2. Step 2: Convert to fraction form
   2,120,880/3,212,208 = 3,212,208/x
3. Step 3: Cross multiply
   2,120,880x = 3,212,208 × 3,212,208
4. Step 4: Simplify right side
   2,120,880x = 10,318,280,235,264
5. Step 5: Solve for x
   x = 10,318,280,235,264/2,120,880
6. Step 6: Final answer
   x = 4,865,093.85