Finding the Third Proportional to 30,215.50 and 66,472.25

Step by Step Solution

1. Step 1: Write the proportion equation
   30,215.50 : 66,472.25 = 66,472.25 : x
2. Step 2: Convert to fraction form
   30,215.50/66,472.25 = 66,472.25/x
3. Step 3: Cross multiply
   30,215.50x = 66,472.25 × 66,472.25
4. Step 4: Simplify right side
   30,215.50x = 4,418,560,020.06
5. Step 5: Solve for x
   x = 4,418,560,020.06/30,215.50
6. Step 6: Final answer
   x = 146,234.88