Finding the Third Proportional to 12,980 and 28,238

Step by Step Solution

1. Step 1: Write the proportion equation
   12,980 : 28,238 = 28,238 : x
2. Step 2: Convert to fraction form
   12,980/28,238 = 28,238/x
3. Step 3: Cross multiply
   12,980x = 28,238 × 28,238
4. Step 4: Simplify right side
   12,980x = 797,384,644
5. Step 5: Solve for x
   x = 797,384,644/12,980
6. Step 6: Final answer
   x = 61,431.79