Finding the Third Proportional to 30,808 and 71,876

Step by Step Solution

1. Step 1: Write the proportion equation
   30,808 : 71,876 = 71,876 : x
2. Step 2: Convert to fraction form
   30,808/71,876 = 71,876/x
3. Step 3: Cross multiply
   30,808x = 71,876 × 71,876
4. Step 4: Simplify right side
   30,808x = 5,166,159,376
5. Step 5: Solve for x
   x = 5,166,159,376/30,808
6. Step 6: Final answer
   x = 167,688.89