Finding the Third Proportional to 140,544 and 308,736

Step by Step Solution

1. Step 1: Write the proportion equation
   140,544 : 308,736 = 308,736 : x
2. Step 2: Convert to fraction form
   140,544/308,736 = 308,736/x
3. Step 3: Cross multiply
   140,544x = 308,736 × 308,736
4. Step 4: Simplify right side
   140,544x = 95,317,917,696
5. Step 5: Solve for x
   x = 95,317,917,696/140,544
6. Step 6: Final answer
   x = 678,206.95