Finding the Third Proportional to 17,982 and 39,021.75

Step by Step Solution

1. Step 1: Write the proportion equation
   17,982 : 39,021.75 = 39,021.75 : x
2. Step 2: Convert to fraction form
   17,982/39,021.75 = 39,021.75/x
3. Step 3: Cross multiply
   17,982x = 39,021.75 × 39,021.75
4. Step 4: Simplify right side
   17,982x = 1,522,696,973.06
5. Step 5: Solve for x
   x = 1,522,696,973.06/17,982
6. Step 6: Final answer
   x = 84,678.96