Finding the Third Proportional to 18,159 and 37,980

Step by Step Solution

1. Step 1: Write the proportion equation
   18,159 : 37,980 = 37,980 : x
2. Step 2: Convert to fraction form
   18,159/37,980 = 37,980/x
3. Step 3: Cross multiply
   18,159x = 37,980 × 37,980
4. Step 4: Simplify right side
   18,159x = 1,442,480,400
5. Step 5: Solve for x
   x = 1,442,480,400/18,159
6. Step 6: Final answer
   x = 79,436.11