Finding the Third Proportional to 8,740 and 18,870

Step by Step Solution

1. Step 1: Write the proportion equation
   8,740 : 18,870 = 18,870 : x
2. Step 2: Convert to fraction form
   8,740/18,870 = 18,870/x
3. Step 3: Cross multiply
   8,740x = 18,870 × 18,870
4. Step 4: Simplify right side
   8,740x = 356,076,900
5. Step 5: Solve for x
   x = 356,076,900/8,740
6. Step 6: Final answer
   x = 40,741.06