Finding the Third Proportional to 144,688.50 and 313,524

Step by Step Solution

1. Step 1: Write the proportion equation
   144,688.50 : 313,524 = 313,524 : x
2. Step 2: Convert to fraction form
   144,688.50/313,524 = 313,524/x
3. Step 3: Cross multiply
   144,688.50x = 313,524 × 313,524
4. Step 4: Simplify right side
   144,688.50x = 98,297,298,576
5. Step 5: Solve for x
   x = 98,297,298,576/144,688.50
6. Step 6: Final answer
   x = 679,371.88