Finding the Third Proportional to 1,086,340 and 2,389,256

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086,340 : 2,389,256 = 2,389,256 : x
2. Step 2: Convert to fraction form
   1,086,340/2,389,256 = 2,389,256/x
3. Step 3: Cross multiply
   1,086,340x = 2,389,256 × 2,389,256
4. Step 4: Simplify right side
   1,086,340x = 5,708,544,233,536
5. Step 5: Solve for x
   x = 5,708,544,233,536/1,086,340
6. Step 6: Final answer
   x = 5,254,841.24