Finding the Third Proportional to 50,747 and 72,128

Step by Step Solution

1. Step 1: Write the proportion equation
   50,747 : 72,128 = 72,128 : x
2. Step 2: Convert to fraction form
   50,747/72,128 = 72,128/x
3. Step 3: Cross multiply
   50,747x = 72,128 × 72,128
4. Step 4: Simplify right side
   50,747x = 5,202,448,384
5. Step 5: Solve for x
   x = 5,202,448,384/50,747
6. Step 6: Final answer
   x = 102,517.36