Finding the Third Proportional to 40,285.25 and 86,399.25

Step by Step Solution

1. Step 1: Write the proportion equation
   40,285.25 : 86,399.25 = 86,399.25 : x
2. Step 2: Convert to fraction form
   40,285.25/86,399.25 = 86,399.25/x
3. Step 3: Cross multiply
   40,285.25x = 86,399.25 × 86,399.25
4. Step 4: Simplify right side
   40,285.25x = 7,464,830,400.56
5. Step 5: Solve for x
   x = 7,464,830,400.56/40,285.25
6. Step 6: Final answer
   x = 185,299.34