Finding the Third Proportional to 81,009 and 120,667.50

Step by Step Solution

1. Step 1: Write the proportion equation
   81,009 : 120,667.50 = 120,667.50 : x
2. Step 2: Convert to fraction form
   81,009/120,667.50 = 120,667.50/x
3. Step 3: Cross multiply
   81,009x = 120,667.50 × 120,667.50
4. Step 4: Simplify right side
   81,009x = 14,560,645,556.25
5. Step 5: Solve for x
   x = 14,560,645,556.25/81,009
6. Step 6: Final answer
   x = 179,741.09