Finding the Third Proportional to 37,728 and 55,485

Step by Step Solution

1. Step 1: Write the proportion equation
   37,728 : 55,485 = 55,485 : x
2. Step 2: Convert to fraction form
   37,728/55,485 = 55,485/x
3. Step 3: Cross multiply
   37,728x = 55,485 × 55,485
4. Step 4: Simplify right side
   37,728x = 3,078,585,225
5. Step 5: Solve for x
   x = 3,078,585,225/37,728
6. Step 6: Final answer
   x = 81,599.48