Finding the Third Proportional to 48,400 and 72,600

Step by Step Solution

1. Step 1: Write the proportion equation
   48,400 : 72,600 = 72,600 : x
2. Step 2: Convert to fraction form
   48,400/72,600 = 72,600/x
3. Step 3: Cross multiply
   48,400x = 72,600 × 72,600
4. Step 4: Simplify right side
   48,400x = 5,270,760,000
5. Step 5: Solve for x
   x = 5,270,760,000/48,400
6. Step 6: Final answer
   x = 108,900