Finding the Third Proportional to 1,215,699 and 2,645,452

Step by Step Solution

1. Step 1: Write the proportion equation
   1,215,699 : 2,645,452 = 2,645,452 : x
2. Step 2: Convert to fraction form
   1,215,699/2,645,452 = 2,645,452/x
3. Step 3: Cross multiply
   1,215,699x = 2,645,452 × 2,645,452
4. Step 4: Simplify right side
   1,215,699x = 6,998,416,284,304
5. Step 5: Solve for x
   x = 6,998,416,284,304/1,215,699
6. Step 6: Final answer
   x = 5,756,701.52