Finding the Third Proportional to 50,320 and 75,990

Step by Step Solution

1. Step 1: Write the proportion equation
   50,320 : 75,990 = 75,990 : x
2. Step 2: Convert to fraction form
   50,320/75,990 = 75,990/x
3. Step 3: Cross multiply
   50,320x = 75,990 × 75,990
4. Step 4: Simplify right side
   50,320x = 5,774,480,100
5. Step 5: Solve for x
   x = 5,774,480,100/50,320
6. Step 6: Final answer
   x = 114,755.17