Finding the Third Proportional to 123,557 and 269,290

Step by Step Solution

1. Step 1: Write the proportion equation
   123,557 : 269,290 = 269,290 : x
2. Step 2: Convert to fraction form
   123,557/269,290 = 269,290/x
3. Step 3: Cross multiply
   123,557x = 269,290 × 269,290
4. Step 4: Simplify right side
   123,557x = 72,517,104,100
5. Step 5: Solve for x
   x = 72,517,104,100/123,557
6. Step 6: Final answer
   x = 586,912.15