Finding the Third Proportional to 123,721.50 and 264,939

Step by Step Solution

1. Step 1: Write the proportion equation
   123,721.50 : 264,939 = 264,939 : x
2. Step 2: Convert to fraction form
   123,721.50/264,939 = 264,939/x
3. Step 3: Cross multiply
   123,721.50x = 264,939 × 264,939
4. Step 4: Simplify right side
   123,721.50x = 70,192,673,721
5. Step 5: Solve for x
   x = 70,192,673,721/123,721.50
6. Step 6: Final answer
   x = 567,344.19