Finding the Third Proportional to 1,156,729 and 1,728,289

Step by Step Solution

1. Step 1: Write the proportion equation
   1,156,729 : 1,728,289 = 1,728,289 : x
2. Step 2: Convert to fraction form
   1,156,729/1,728,289 = 1,728,289/x
3. Step 3: Cross multiply
   1,156,729x = 1,728,289 × 1,728,289
4. Step 4: Simplify right side
   1,156,729x = 2,986,982,867,521
5. Step 5: Solve for x
   x = 2,986,982,867,521/1,156,729
6. Step 6: Final answer
   x = 2,582,266.78