Finding the Third Proportional to 12,913 and 20,908

Step by Step Solution

1. Step 1: Write the proportion equation
   12,913 : 20,908 = 20,908 : x
2. Step 2: Convert to fraction form
   12,913/20,908 = 20,908/x
3. Step 3: Cross multiply
   12,913x = 20,908 × 20,908
4. Step 4: Simplify right side
   12,913x = 437,144,464
5. Step 5: Solve for x
   x = 437,144,464/12,913
6. Step 6: Final answer
   x = 33,853.05