Finding the Third Proportional to 1,247,928 and 1,783,320

Step by Step Solution

1. Step 1: Write the proportion equation
   1,247,928 : 1,783,320 = 1,783,320 : x
2. Step 2: Convert to fraction form
   1,247,928/1,783,320 = 1,783,320/x
3. Step 3: Cross multiply
   1,247,928x = 1,783,320 × 1,783,320
4. Step 4: Simplify right side
   1,247,928x = 3,180,230,222,400
5. Step 5: Solve for x
   x = 3,180,230,222,400/1,247,928
6. Step 6: Final answer
   x = 2,548,408.42