Finding the Third Proportional to 815,344 and 1,729,360

Step by Step Solution

1. Step 1: Write the proportion equation
   815,344 : 1,729,360 = 1,729,360 : x
2. Step 2: Convert to fraction form
   815,344/1,729,360 = 1,729,360/x
3. Step 3: Cross multiply
   815,344x = 1,729,360 × 1,729,360
4. Step 4: Simplify right side
   815,344x = 2,990,686,009,600
5. Step 5: Solve for x
   x = 2,990,686,009,600/815,344
6. Step 6: Final answer
   x = 3,668,005.17