Finding the Third Proportional to 12,980 and 28,238.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,980 : 28,238.50 = 28,238.50 : x
2. Step 2: Convert to fraction form
   12,980/28,238.50 = 28,238.50/x
3. Step 3: Cross multiply
   12,980x = 28,238.50 × 28,238.50
4. Step 4: Simplify right side
   12,980x = 797,412,882.25
5. Step 5: Solve for x
   x = 797,412,882.25/12,980
6. Step 6: Final answer
   x = 61,433.97