Finding the Third Proportional to 1,213,992 and 2,659,266

Step by Step Solution

1. Step 1: Write the proportion equation
   1,213,992 : 2,659,266 = 2,659,266 : x
2. Step 2: Convert to fraction form
   1,213,992/2,659,266 = 2,659,266/x
3. Step 3: Cross multiply
   1,213,992x = 2,659,266 × 2,659,266
4. Step 4: Simplify right side
   1,213,992x = 7,071,695,658,756
5. Step 5: Solve for x
   x = 7,071,695,658,756/1,213,992
6. Step 6: Final answer
   x = 5,825,158.37