Finding the Third Proportional to 1,212,256 and 1,818,384

Step by Step Solution

1. Step 1: Write the proportion equation
   1,212,256 : 1,818,384 = 1,818,384 : x
2. Step 2: Convert to fraction form
   1,212,256/1,818,384 = 1,818,384/x
3. Step 3: Cross multiply
   1,212,256x = 1,818,384 × 1,818,384
4. Step 4: Simplify right side
   1,212,256x = 3,306,520,371,456
5. Step 5: Solve for x
   x = 3,306,520,371,456/1,212,256
6. Step 6: Final answer
   x = 2,727,576