Finding the Third Proportional to 128,059.50 and 185,009

Step by Step Solution

1. Step 1: Write the proportion equation
   128,059.50 : 185,009 = 185,009 : x
2. Step 2: Convert to fraction form
   128,059.50/185,009 = 185,009/x
3. Step 3: Cross multiply
   128,059.50x = 185,009 × 185,009
4. Step 4: Simplify right side
   128,059.50x = 34,228,330,081
5. Step 5: Solve for x
   x = 34,228,330,081/128,059.50
6. Step 6: Final answer
   x = 267,284.58