Finding the Third Proportional to 1,286,688 and 2,718,528

Step by Step Solution

1. Step 1: Write the proportion equation
   1,286,688 : 2,718,528 = 2,718,528 : x
2. Step 2: Convert to fraction form
   1,286,688/2,718,528 = 2,718,528/x
3. Step 3: Cross multiply
   1,286,688x = 2,718,528 × 2,718,528
4. Step 4: Simplify right side
   1,286,688x = 7,390,394,486,784
5. Step 5: Solve for x
   x = 7,390,394,486,784/1,286,688
6. Step 6: Final answer
   x = 5,743,734.68