Finding the Third Proportional to 79,700 and 174,920

Step by Step Solution

1. Step 1: Write the proportion equation
   79,700 : 174,920 = 174,920 : x
2. Step 2: Convert to fraction form
   79,700/174,920 = 174,920/x
3. Step 3: Cross multiply
   79,700x = 174,920 × 174,920
4. Step 4: Simplify right side
   79,700x = 30,597,006,400
5. Step 5: Solve for x
   x = 30,597,006,400/79,700
6. Step 6: Final answer
   x = 383,902.21