Finding the Third Proportional to 1,128,560 and 1,728,267

Step by Step Solution

1. Step 1: Write the proportion equation
   1,128,560 : 1,728,267 = 1,728,267 : x
2. Step 2: Convert to fraction form
   1,128,560/1,728,267 = 1,728,267/x
3. Step 3: Cross multiply
   1,128,560x = 1,728,267 × 1,728,267
4. Step 4: Simplify right side
   1,128,560x = 2,986,906,823,289
5. Step 5: Solve for x
   x = 2,986,906,823,289/1,128,560
6. Step 6: Final answer
   x = 2,646,653.10