Finding the Third Proportional to 143,206.50 and 308,544

Step by Step Solution

1. Step 1: Write the proportion equation
   143,206.50 : 308,544 = 308,544 : x
2. Step 2: Convert to fraction form
   143,206.50/308,544 = 308,544/x
3. Step 3: Cross multiply
   143,206.50x = 308,544 × 308,544
4. Step 4: Simplify right side
   143,206.50x = 95,199,399,936
5. Step 5: Solve for x
   x = 95,199,399,936/143,206.50
6. Step 6: Final answer
   x = 664,770.10