Finding the Third Proportional to 20,740 and 31,109

Step by Step Solution

1. Step 1: Write the proportion equation
   20,740 : 31,109 = 31,109 : x
2. Step 2: Convert to fraction form
   20,740/31,109 = 31,109/x
3. Step 3: Cross multiply
   20,740x = 31,109 × 31,109
4. Step 4: Simplify right side
   20,740x = 967,769,881
5. Step 5: Solve for x
   x = 967,769,881/20,740
6. Step 6: Final answer
   x = 46,662.00