Finding the Third Proportional to 280,156 and 599,678

Step by Step Solution

1. Step 1: Write the proportion equation
   280,156 : 599,678 = 599,678 : x
2. Step 2: Convert to fraction form
   280,156/599,678 = 599,678/x
3. Step 3: Cross multiply
   280,156x = 599,678 × 599,678
4. Step 4: Simplify right side
   280,156x = 359,613,703,684
5. Step 5: Solve for x
   x = 359,613,703,684/280,156
6. Step 6: Final answer
   x = 1,283,619.50