Finding the Third Proportional to 40,861.50 and 55,455

Step by Step Solution

1. Step 1: Write the proportion equation
   40,861.50 : 55,455 = 55,455 : x
2. Step 2: Convert to fraction form
   40,861.50/55,455 = 55,455/x
3. Step 3: Cross multiply
   40,861.50x = 55,455 × 55,455
4. Step 4: Simplify right side
   40,861.50x = 3,075,257,025
5. Step 5: Solve for x
   x = 3,075,257,025/40,861.50
6. Step 6: Final answer
   x = 75,260.50