Finding the Third Proportional to 33,120 and 49,990

Step by Step Solution

1. Step 1: Write the proportion equation
   33,120 : 49,990 = 49,990 : x
2. Step 2: Convert to fraction form
   33,120/49,990 = 49,990/x
3. Step 3: Cross multiply
   33,120x = 49,990 × 49,990
4. Step 4: Simplify right side
   33,120x = 2,499,000,100
5. Step 5: Solve for x
   x = 2,499,000,100/33,120
6. Step 6: Final answer
   x = 75,452.90