Finding the Third Proportional to 12,774 and 19,938

Step by Step Solution

1. Step 1: Write the proportion equation
   12,774 : 19,938 = 19,938 : x
2. Step 2: Convert to fraction form
   12,774/19,938 = 19,938/x
3. Step 3: Cross multiply
   12,774x = 19,938 × 19,938
4. Step 4: Simplify right side
   12,774x = 397,523,844
5. Step 5: Solve for x
   x = 397,523,844/12,774
6. Step 6: Final answer
   x = 31,119.76