Finding the Third Proportional to 18,670.50 and 39,072.38

Step by Step Solution

1. Step 1: Write the proportion equation
   18,670.50 : 39,072.38 = 39,072.38 : x
2. Step 2: Convert to fraction form
   18,670.50/39,072.38 = 39,072.38/x
3. Step 3: Cross multiply
   18,670.50x = 39,072.38 × 39,072.38
4. Step 4: Simplify right side
   18,670.50x = 1,526,650,488.14
5. Step 5: Solve for x
   x = 1,526,650,488.14/18,670.50
6. Step 6: Final answer
   x = 81,768.06