Finding the Third Proportional to 143,905.50 and 308,955

Step by Step Solution

1. Step 1: Write the proportion equation
   143,905.50 : 308,955 = 308,955 : x
2. Step 2: Convert to fraction form
   143,905.50/308,955 = 308,955/x
3. Step 3: Cross multiply
   143,905.50x = 308,955 × 308,955
4. Step 4: Simplify right side
   143,905.50x = 95,453,192,025
5. Step 5: Solve for x
   x = 95,453,192,025/143,905.50
6. Step 6: Final answer
   x = 663,304.68