Finding the Third Proportional to 18,131.63 and 39,584.25

Step by Step Solution

1. Step 1: Write the proportion equation
   18,131.63 : 39,584.25 = 39,584.25 : x
2. Step 2: Convert to fraction form
   18,131.63/39,584.25 = 39,584.25/x
3. Step 3: Cross multiply
   18,131.63x = 39,584.25 × 39,584.25
4. Step 4: Simplify right side
   18,131.63x = 1,566,912,848.06
5. Step 5: Solve for x
   x = 1,566,912,848.06/18,131.63
6. Step 6: Final answer
   x = 86,418.78