Finding the Third Proportional to 585,522 and 1,278,144

Step by Step Solution

1. Step 1: Write the proportion equation
   585,522 : 1,278,144 = 1,278,144 : x
2. Step 2: Convert to fraction form
   585,522/1,278,144 = 1,278,144/x
3. Step 3: Cross multiply
   585,522x = 1,278,144 × 1,278,144
4. Step 4: Simplify right side
   585,522x = 1,633,652,084,736
5. Step 5: Solve for x
   x = 1,633,652,084,736/585,522
6. Step 6: Final answer
   x = 2,790,078.06