Finding the Third Proportional to 39,530.25 and 86,434.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,530.25 : 86,434.50 = 86,434.50 : x
2. Step 2: Convert to fraction form
   39,530.25/86,434.50 = 86,434.50/x
3. Step 3: Cross multiply
   39,530.25x = 86,434.50 × 86,434.50
4. Step 4: Simplify right side
   39,530.25x = 7,470,922,790.25
5. Step 5: Solve for x
   x = 7,470,922,790.25/39,530.25
6. Step 6: Final answer
   x = 188,992.55