Finding the Third Proportional to 111,451.50 and 169,308

Step by Step Solution

1. Step 1: Write the proportion equation
   111,451.50 : 169,308 = 169,308 : x
2. Step 2: Convert to fraction form
   111,451.50/169,308 = 169,308/x
3. Step 3: Cross multiply
   111,451.50x = 169,308 × 169,308
4. Step 4: Simplify right side
   111,451.50x = 28,665,198,864
5. Step 5: Solve for x
   x = 28,665,198,864/111,451.50
6. Step 6: Final answer
   x = 257,198.86