Finding the Third Proportional to 1,283,710 and 1,986,720

Step by Step Solution

1. Step 1: Write the proportion equation
   1,283,710 : 1,986,720 = 1,986,720 : x
2. Step 2: Convert to fraction form
   1,283,710/1,986,720 = 1,986,720/x
3. Step 3: Cross multiply
   1,283,710x = 1,986,720 × 1,986,720
4. Step 4: Simplify right side
   1,283,710x = 3,947,056,358,400
5. Step 5: Solve for x
   x = 3,947,056,358,400/1,283,710
6. Step 6: Final answer
   x = 3,074,725.88