Finding the Third Proportional to 1,013,780 and 2,177,320

Step by Step Solution

1. Step 1: Write the proportion equation
   1,013,780 : 2,177,320 = 2,177,320 : x
2. Step 2: Convert to fraction form
   1,013,780/2,177,320 = 2,177,320/x
3. Step 3: Cross multiply
   1,013,780x = 2,177,320 × 2,177,320
4. Step 4: Simplify right side
   1,013,780x = 4,740,722,382,400
5. Step 5: Solve for x
   x = 4,740,722,382,400/1,013,780
6. Step 6: Final answer
   x = 4,676,283.20