Finding the Third Proportional to 72,856 and 111,400

Step by Step Solution

1. Step 1: Write the proportion equation
   72,856 : 111,400 = 111,400 : x
2. Step 2: Convert to fraction form
   72,856/111,400 = 111,400/x
3. Step 3: Cross multiply
   72,856x = 111,400 × 111,400
4. Step 4: Simplify right side
   72,856x = 12,409,960,000
5. Step 5: Solve for x
   x = 12,409,960,000/72,856
6. Step 6: Final answer
   x = 170,335.46