Finding the Third Proportional to 85,150 and 128,904

Step by Step Solution

1. Step 1: Write the proportion equation
   85,150 : 128,904 = 128,904 : x
2. Step 2: Convert to fraction form
   85,150/128,904 = 128,904/x
3. Step 3: Cross multiply
   85,150x = 128,904 × 128,904
4. Step 4: Simplify right side
   85,150x = 16,616,241,216
5. Step 5: Solve for x
   x = 16,616,241,216/85,150
6. Step 6: Final answer
   x = 195,140.82