Finding the Third Proportional to 1,287,428 and 1,947,712

Step by Step Solution

1. Step 1: Write the proportion equation
   1,287,428 : 1,947,712 = 1,947,712 : x
2. Step 2: Convert to fraction form
   1,287,428/1,947,712 = 1,947,712/x
3. Step 3: Cross multiply
   1,287,428x = 1,947,712 × 1,947,712
4. Step 4: Simplify right side
   1,287,428x = 3,793,582,034,944
5. Step 5: Solve for x
   x = 3,793,582,034,944/1,287,428
6. Step 6: Final answer
   x = 2,946,636.27