Finding the Third Proportional to 39,708 and 83,578.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,708 : 83,578.50 = 83,578.50 : x
2. Step 2: Convert to fraction form
   39,708/83,578.50 = 83,578.50/x
3. Step 3: Cross multiply
   39,708x = 83,578.50 × 83,578.50
4. Step 4: Simplify right side
   39,708x = 6,985,365,662.25
5. Step 5: Solve for x
   x = 6,985,365,662.25/39,708
6. Step 6: Final answer
   x = 175,918.35