Finding the Third Proportional to 143,076.50 and 308,295

Step by Step Solution

1. Step 1: Write the proportion equation
   143,076.50 : 308,295 = 308,295 : x
2. Step 2: Convert to fraction form
   143,076.50/308,295 = 308,295/x
3. Step 3: Cross multiply
   143,076.50x = 308,295 × 308,295
4. Step 4: Simplify right side
   143,076.50x = 95,045,807,025
5. Step 5: Solve for x
   x = 95,045,807,025/143,076.50
6. Step 6: Final answer
   x = 664,300.62