Finding the Third Proportional to 40,321.50 and 85,081.50

Step by Step Solution

1. Step 1: Write the proportion equation
   40,321.50 : 85,081.50 = 85,081.50 : x
2. Step 2: Convert to fraction form
   40,321.50/85,081.50 = 85,081.50/x
3. Step 3: Cross multiply
   40,321.50x = 85,081.50 × 85,081.50
4. Step 4: Simplify right side
   40,321.50x = 7,238,861,642.25
5. Step 5: Solve for x
   x = 7,238,861,642.25/40,321.50
6. Step 6: Final answer
   x = 179,528.58