Finding the Third Proportional to 30,256.50 and 69,930

Step by Step Solution

1. Step 1: Write the proportion equation
   30,256.50 : 69,930 = 69,930 : x
2. Step 2: Convert to fraction form
   30,256.50/69,930 = 69,930/x
3. Step 3: Cross multiply
   30,256.50x = 69,930 × 69,930
4. Step 4: Simplify right side
   30,256.50x = 4,890,204,900
5. Step 5: Solve for x
   x = 4,890,204,900/30,256.50
6. Step 6: Final answer
   x = 161,624.94