Finding the Third Proportional to 200,968.50 and 311,040

Step by Step Solution

1. Step 1: Write the proportion equation
   200,968.50 : 311,040 = 311,040 : x
2. Step 2: Convert to fraction form
   200,968.50/311,040 = 311,040/x
3. Step 3: Cross multiply
   200,968.50x = 311,040 × 311,040
4. Step 4: Simplify right side
   200,968.50x = 96,745,881,600
5. Step 5: Solve for x
   x = 96,745,881,600/200,968.50
6. Step 6: Final answer
   x = 481,398.24