Finding the Third Proportional to 123,158 and 266,556

Step by Step Solution

1. Step 1: Write the proportion equation
   123,158 : 266,556 = 266,556 : x
2. Step 2: Convert to fraction form
   123,158/266,556 = 266,556/x
3. Step 3: Cross multiply
   123,158x = 266,556 × 266,556
4. Step 4: Simplify right side
   123,158x = 71,052,101,136
5. Step 5: Solve for x
   x = 71,052,101,136/123,158
6. Step 6: Final answer
   x = 576,918.28