Finding the Third Proportional to 1,287,436 and 1,947,720

Step by Step Solution

1. Step 1: Write the proportion equation
   1,287,436 : 1,947,720 = 1,947,720 : x
2. Step 2: Convert to fraction form
   1,287,436/1,947,720 = 1,947,720/x
3. Step 3: Cross multiply
   1,287,436x = 1,947,720 × 1,947,720
4. Step 4: Simplify right side
   1,287,436x = 3,793,613,198,400
5. Step 5: Solve for x
   x = 3,793,613,198,400/1,287,436
6. Step 6: Final answer
   x = 2,946,642.16