Finding the Third Proportional to 1,247,120 and 1,783,480

Step by Step Solution

1. Step 1: Write the proportion equation
   1,247,120 : 1,783,480 = 1,783,480 : x
2. Step 2: Convert to fraction form
   1,247,120/1,783,480 = 1,783,480/x
3. Step 3: Cross multiply
   1,247,120x = 1,783,480 × 1,783,480
4. Step 4: Simplify right side
   1,247,120x = 3,180,800,910,400
5. Step 5: Solve for x
   x = 3,180,800,910,400/1,247,120
6. Step 6: Final answer
   x = 2,550,517.12