Finding the Third Proportional to 123,099.75 and 268,974

Step by Step Solution

1. Step 1: Write the proportion equation
   123,099.75 : 268,974 = 268,974 : x
2. Step 2: Convert to fraction form
   123,099.75/268,974 = 268,974/x
3. Step 3: Cross multiply
   123,099.75x = 268,974 × 268,974
4. Step 4: Simplify right side
   123,099.75x = 72,347,012,676
5. Step 5: Solve for x
   x = 72,347,012,676/123,099.75
6. Step 6: Final answer
   x = 587,710.48