Finding the Third Proportional to 31,604.50 and 69,770

Step by Step Solution

1. Step 1: Write the proportion equation
   31,604.50 : 69,770 = 69,770 : x
2. Step 2: Convert to fraction form
   31,604.50/69,770 = 69,770/x
3. Step 3: Cross multiply
   31,604.50x = 69,770 × 69,770
4. Step 4: Simplify right side
   31,604.50x = 4,867,852,900
5. Step 5: Solve for x
   x = 4,867,852,900/31,604.50
6. Step 6: Final answer
   x = 154,024.04