Finding the Third Proportional to 40,851 and 55,440

Step by Step Solution

1. Step 1: Write the proportion equation
   40,851 : 55,440 = 55,440 : x
2. Step 2: Convert to fraction form
   40,851/55,440 = 55,440/x
3. Step 3: Cross multiply
   40,851x = 55,440 × 55,440
4. Step 4: Simplify right side
   40,851x = 3,073,593,600
5. Step 5: Solve for x
   x = 3,073,593,600/40,851
6. Step 6: Final answer
   x = 75,239.13