Finding the Third Proportional to 12,740 and 18,998

Step by Step Solution

1. Step 1: Write the proportion equation
   12,740 : 18,998 = 18,998 : x
2. Step 2: Convert to fraction form
   12,740/18,998 = 18,998/x
3. Step 3: Cross multiply
   12,740x = 18,998 × 18,998
4. Step 4: Simplify right side
   12,740x = 360,924,004
5. Step 5: Solve for x
   x = 360,924,004/12,740
6. Step 6: Final answer
   x = 28,329.98