Finding the Third Proportional to 40,586.25 and 55,289.25

Step by Step Solution

1. Step 1: Write the proportion equation
   40,586.25 : 55,289.25 = 55,289.25 : x
2. Step 2: Convert to fraction form
   40,586.25/55,289.25 = 55,289.25/x
3. Step 3: Cross multiply
   40,586.25x = 55,289.25 × 55,289.25
4. Step 4: Simplify right side
   40,586.25x = 3,056,901,165.56
5. Step 5: Solve for x
   x = 3,056,901,165.56/40,586.25
6. Step 6: Final answer
   x = 75,318.64