Finding the Third Proportional to 123,490 and 266,180

Step by Step Solution

1. Step 1: Write the proportion equation
   123,490 : 266,180 = 266,180 : x
2. Step 2: Convert to fraction form
   123,490/266,180 = 266,180/x
3. Step 3: Cross multiply
   123,490x = 266,180 × 266,180
4. Step 4: Simplify right side
   123,490x = 70,851,792,400
5. Step 5: Solve for x
   x = 70,851,792,400/123,490
6. Step 6: Final answer
   x = 573,745.18