Finding the Third Proportional to 116,728 and 169,990

Step by Step Solution

1. Step 1: Write the proportion equation
   116,728 : 169,990 = 169,990 : x
2. Step 2: Convert to fraction form
   116,728/169,990 = 169,990/x
3. Step 3: Cross multiply
   116,728x = 169,990 × 169,990
4. Step 4: Simplify right side
   116,728x = 28,896,600,100
5. Step 5: Solve for x
   x = 28,896,600,100/116,728
6. Step 6: Final answer
   x = 247,555.00