Finding the Third Proportional to 17,982 and 39,243.75

Step by Step Solution

1. Step 1: Write the proportion equation
   17,982 : 39,243.75 = 39,243.75 : x
2. Step 2: Convert to fraction form
   17,982/39,243.75 = 39,243.75/x
3. Step 3: Cross multiply
   17,982x = 39,243.75 × 39,243.75
4. Step 4: Simplify right side
   17,982x = 1,540,071,914.06
5. Step 5: Solve for x
   x = 1,540,071,914.06/17,982
6. Step 6: Final answer
   x = 85,645.20