Finding the Third Proportional to 815,378 and 1,729,414

Step by Step Solution

1. Step 1: Write the proportion equation
   815,378 : 1,729,414 = 1,729,414 : x
2. Step 2: Convert to fraction form
   815,378/1,729,414 = 1,729,414/x
3. Step 3: Cross multiply
   815,378x = 1,729,414 × 1,729,414
4. Step 4: Simplify right side
   815,378x = 2,990,872,783,396
5. Step 5: Solve for x
   x = 2,990,872,783,396/815,378
6. Step 6: Final answer
   x = 3,668,081.29