Finding the Third Proportional to 1,215,228 and 2,617,446

Step by Step Solution

1. Step 1: Write the proportion equation
   1,215,228 : 2,617,446 = 2,617,446 : x
2. Step 2: Convert to fraction form
   1,215,228/2,617,446 = 2,617,446/x
3. Step 3: Cross multiply
   1,215,228x = 2,617,446 × 2,617,446
4. Step 4: Simplify right side
   1,215,228x = 6,851,023,562,916
5. Step 5: Solve for x
   x = 6,851,023,562,916/1,215,228
6. Step 6: Final answer
   x = 5,637,644.59