Finding the Third Proportional to 1,215,697 and 2,645,448

Step by Step Solution

1. Step 1: Write the proportion equation
   1,215,697 : 2,645,448 = 2,645,448 : x
2. Step 2: Convert to fraction form
   1,215,697/2,645,448 = 2,645,448/x
3. Step 3: Cross multiply
   1,215,697x = 2,645,448 × 2,645,448
4. Step 4: Simplify right side
   1,215,697x = 6,998,395,120,704
5. Step 5: Solve for x
   x = 6,998,395,120,704/1,215,697
6. Step 6: Final answer
   x = 5,756,693.58