Finding the Third Proportional to 1,215,742 and 2,645,540

Step by Step Solution

1. Step 1: Write the proportion equation
   1,215,742 : 2,645,540 = 2,645,540 : x
2. Step 2: Convert to fraction form
   1,215,742/2,645,540 = 2,645,540/x
3. Step 3: Cross multiply
   1,215,742x = 2,645,540 × 2,645,540
4. Step 4: Simplify right side
   1,215,742x = 6,998,881,891,600
5. Step 5: Solve for x
   x = 6,998,881,891,600/1,215,742
6. Step 6: Final answer
   x = 5,756,880.89