Finding the Third Proportional to 40,243.25 and 87,406.75

Step by Step Solution

1. Step 1: Write the proportion equation
   40,243.25 : 87,406.75 = 87,406.75 : x
2. Step 2: Convert to fraction form
   40,243.25/87,406.75 = 87,406.75/x
3. Step 3: Cross multiply
   40,243.25x = 87,406.75 × 87,406.75
4. Step 4: Simplify right side
   40,243.25x = 7,639,939,945.56
5. Step 5: Solve for x
   x = 7,639,939,945.56/40,243.25
6. Step 6: Final answer
   x = 189,844.01