Finding the Third Proportional to 1,287,438 and 1,947,723

Step by Step Solution

1. Step 1: Write the proportion equation
   1,287,438 : 1,947,723 = 1,947,723 : x
2. Step 2: Convert to fraction form
   1,287,438/1,947,723 = 1,947,723/x
3. Step 3: Cross multiply
   1,287,438x = 1,947,723 × 1,947,723
4. Step 4: Simplify right side
   1,287,438x = 3,793,624,884,729
5. Step 5: Solve for x
   x = 3,793,624,884,729/1,287,438
6. Step 6: Final answer
   x = 2,946,646.66