Finding the Third Proportional to 123,619.50 and 266,949

Step by Step Solution

1. Step 1: Write the proportion equation
   123,619.50 : 266,949 = 266,949 : x
2. Step 2: Convert to fraction form
   123,619.50/266,949 = 266,949/x
3. Step 3: Cross multiply
   123,619.50x = 266,949 × 266,949
4. Step 4: Simplify right side
   123,619.50x = 71,261,768,601
5. Step 5: Solve for x
   x = 71,261,768,601/123,619.50
6. Step 6: Final answer
   x = 576,460.58