Finding the Third Proportional to 1,213,980 and 2,659,242

Step by Step Solution

1. Step 1: Write the proportion equation
   1,213,980 : 2,659,242 = 2,659,242 : x
2. Step 2: Convert to fraction form
   1,213,980/2,659,242 = 2,659,242/x
3. Step 3: Cross multiply
   1,213,980x = 2,659,242 × 2,659,242
4. Step 4: Simplify right side
   1,213,980x = 7,071,568,014,564
5. Step 5: Solve for x
   x = 7,071,568,014,564/1,213,980
6. Step 6: Final answer
   x = 5,825,110.80