Finding the Third Proportional to 8,471 and 13,091

Step by Step Solution

1. Step 1: Write the proportion equation
   8,471 : 13,091 = 13,091 : x
2. Step 2: Convert to fraction form
   8,471/13,091 = 13,091/x
3. Step 3: Cross multiply
   8,471x = 13,091 × 13,091
4. Step 4: Simplify right side
   8,471x = 171,374,281
5. Step 5: Solve for x
   x = 171,374,281/8,471
6. Step 6: Final answer
   x = 20,230.70