Finding the Third Proportional to 585,810 and 1,278,540

Step by Step Solution

1. Step 1: Write the proportion equation
   585,810 : 1,278,540 = 1,278,540 : x
2. Step 2: Convert to fraction form
   585,810/1,278,540 = 1,278,540/x
3. Step 3: Cross multiply
   585,810x = 1,278,540 × 1,278,540
4. Step 4: Simplify right side
   585,810x = 1,634,664,531,600
5. Step 5: Solve for x
   x = 1,634,664,531,600/585,810
6. Step 6: Final answer
   x = 2,790,434.67