Finding the Third Proportional to 143,524.50 and 308,987

Step by Step Solution

1. Step 1: Write the proportion equation
   143,524.50 : 308,987 = 308,987 : x
2. Step 2: Convert to fraction form
   143,524.50/308,987 = 308,987/x
3. Step 3: Cross multiply
   143,524.50x = 308,987 × 308,987
4. Step 4: Simplify right side
   143,524.50x = 95,472,966,169
5. Step 5: Solve for x
   x = 95,472,966,169/143,524.50
6. Step 6: Final answer
   x = 665,203.27