Finding the Third Proportional to 12,945 and 28,311

Step by Step Solution

1. Step 1: Write the proportion equation
   12,945 : 28,311 = 28,311 : x
2. Step 2: Convert to fraction form
   12,945/28,311 = 28,311/x
3. Step 3: Cross multiply
   12,945x = 28,311 × 28,311
4. Step 4: Simplify right side
   12,945x = 801,512,721
5. Step 5: Solve for x
   x = 801,512,721/12,945
6. Step 6: Final answer
   x = 61,916.78