Finding the Third Proportional to 1,002,780 and 2,188,480

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002,780 : 2,188,480 = 2,188,480 : x
2. Step 2: Convert to fraction form
   1,002,780/2,188,480 = 2,188,480/x
3. Step 3: Cross multiply
   1,002,780x = 2,188,480 × 2,188,480
4. Step 4: Simplify right side
   1,002,780x = 4,789,444,710,400
5. Step 5: Solve for x
   x = 4,789,444,710,400/1,002,780
6. Step 6: Final answer
   x = 4,776,166.97