Finding the Third Proportional to 1,212,400 and 2,020,582

Step by Step Solution

1. Step 1: Write the proportion equation
   1,212,400 : 2,020,582 = 2,020,582 : x
2. Step 2: Convert to fraction form
   1,212,400/2,020,582 = 2,020,582/x
3. Step 3: Cross multiply
   1,212,400x = 2,020,582 × 2,020,582
4. Step 4: Simplify right side
   1,212,400x = 4,082,751,618,724
5. Step 5: Solve for x
   x = 4,082,751,618,724/1,212,400
6. Step 6: Final answer
   x = 3,367,495.56