Finding the Third Proportional to 54,556 and 80,040

Step by Step Solution

1. Step 1: Write the proportion equation
   54,556 : 80,040 = 80,040 : x
2. Step 2: Convert to fraction form
   54,556/80,040 = 80,040/x
3. Step 3: Cross multiply
   54,556x = 80,040 × 80,040
4. Step 4: Simplify right side
   54,556x = 6,406,401,600
5. Step 5: Solve for x
   x = 6,406,401,600/54,556
6. Step 6: Final answer
   x = 117,427.99