Finding the Third Proportional to 123,979.50 and 268,560

Step by Step Solution

1. Step 1: Write the proportion equation
   123,979.50 : 268,560 = 268,560 : x
2. Step 2: Convert to fraction form
   123,979.50/268,560 = 268,560/x
3. Step 3: Cross multiply
   123,979.50x = 268,560 × 268,560
4. Step 4: Simplify right side
   123,979.50x = 72,124,473,600
5. Step 5: Solve for x
   x = 72,124,473,600/123,979.50
6. Step 6: Final answer
   x = 581,745.16