Finding the Third Proportional to 40,089.75 and 86,535.50

Step by Step Solution

1. Step 1: Write the proportion equation
   40,089.75 : 86,535.50 = 86,535.50 : x
2. Step 2: Convert to fraction form
   40,089.75/86,535.50 = 86,535.50/x
3. Step 3: Cross multiply
   40,089.75x = 86,535.50 × 86,535.50
4. Step 4: Simplify right side
   40,089.75x = 7,488,392,760.25
5. Step 5: Solve for x
   x = 7,488,392,760.25/40,089.75
6. Step 6: Final answer
   x = 186,790.71