Finding the Third Proportional to 50,120 and 74,640

Step by Step Solution

1. Step 1: Write the proportion equation
   50,120 : 74,640 = 74,640 : x
2. Step 2: Convert to fraction form
   50,120/74,640 = 74,640/x
3. Step 3: Cross multiply
   50,120x = 74,640 × 74,640
4. Step 4: Simplify right side
   50,120x = 5,571,129,600
5. Step 5: Solve for x
   x = 5,571,129,600/50,120
6. Step 6: Final answer
   x = 111,155.82