Finding the Third Proportional to 40,890 and 54,949.50

Step by Step Solution

1. Step 1: Write the proportion equation
   40,890 : 54,949.50 = 54,949.50 : x
2. Step 2: Convert to fraction form
   40,890/54,949.50 = 54,949.50/x
3. Step 3: Cross multiply
   40,890x = 54,949.50 × 54,949.50
4. Step 4: Simplify right side
   40,890x = 3,019,447,550.25
5. Step 5: Solve for x
   x = 3,019,447,550.25/40,890
6. Step 6: Final answer
   x = 73,843.18