Finding the Third Proportional to 123,368 and 268,930

Step by Step Solution

1. Step 1: Write the proportion equation
   123,368 : 268,930 = 268,930 : x
2. Step 2: Convert to fraction form
   123,368/268,930 = 268,930/x
3. Step 3: Cross multiply
   123,368x = 268,930 × 268,930
4. Step 4: Simplify right side
   123,368x = 72,323,344,900
5. Step 5: Solve for x
   x = 72,323,344,900/123,368
6. Step 6: Final answer
   x = 586,240.72