Finding the Third Proportional to 30,530 and 71,807

Step by Step Solution

1. Step 1: Write the proportion equation
   30,530 : 71,807 = 71,807 : x
2. Step 2: Convert to fraction form
   30,530/71,807 = 71,807/x
3. Step 3: Cross multiply
   30,530x = 71,807 × 71,807
4. Step 4: Simplify right side
   30,530x = 5,156,245,249
5. Step 5: Solve for x
   x = 5,156,245,249/30,530
6. Step 6: Final answer
   x = 168,891.10