Finding the Third Proportional to 59,800.50 and 123,489

Step by Step Solution

1. Step 1: Write the proportion equation
   59,800.50 : 123,489 = 123,489 : x
2. Step 2: Convert to fraction form
   59,800.50/123,489 = 123,489/x
3. Step 3: Cross multiply
   59,800.50x = 123,489 × 123,489
4. Step 4: Simplify right side
   59,800.50x = 15,249,533,121
5. Step 5: Solve for x
   x = 15,249,533,121/59,800.50
6. Step 6: Final answer
   x = 255,006.78