Finding the Third Proportional to 78,489.50 and 169,930

Step by Step Solution

1. Step 1: Write the proportion equation
   78,489.50 : 169,930 = 169,930 : x
2. Step 2: Convert to fraction form
   78,489.50/169,930 = 169,930/x
3. Step 3: Cross multiply
   78,489.50x = 169,930 × 169,930
4. Step 4: Simplify right side
   78,489.50x = 28,876,204,900
5. Step 5: Solve for x
   x = 28,876,204,900/78,489.50
6. Step 6: Final answer
   x = 367,898.95