Finding the Third Proportional to 128,883.50 and 282,983

Step by Step Solution

1. Step 1: Write the proportion equation
   128,883.50 : 282,983 = 282,983 : x
2. Step 2: Convert to fraction form
   128,883.50/282,983 = 282,983/x
3. Step 3: Cross multiply
   128,883.50x = 282,983 × 282,983
4. Step 4: Simplify right side
   128,883.50x = 80,079,378,289
5. Step 5: Solve for x
   x = 80,079,378,289/128,883.50
6. Step 6: Final answer
   x = 621,331.50