Finding the Third Proportional to 605,872 and 1,274,420

Step by Step Solution

1. Step 1: Write the proportion equation
   605,872 : 1,274,420 = 1,274,420 : x
2. Step 2: Convert to fraction form
   605,872/1,274,420 = 1,274,420/x
3. Step 3: Cross multiply
   605,872x = 1,274,420 × 1,274,420
4. Step 4: Simplify right side
   605,872x = 1,624,146,336,400
5. Step 5: Solve for x
   x = 1,624,146,336,400/605,872
6. Step 6: Final answer
   x = 2,680,675.68