Finding the Third Proportional to 120,289.50 and 168,171

Step by Step Solution

1. Step 1: Write the proportion equation
   120,289.50 : 168,171 = 168,171 : x
2. Step 2: Convert to fraction form
   120,289.50/168,171 = 168,171/x
3. Step 3: Cross multiply
   120,289.50x = 168,171 × 168,171
4. Step 4: Simplify right side
   120,289.50x = 28,281,485,241
5. Step 5: Solve for x
   x = 28,281,485,241/120,289.50
6. Step 6: Final answer
   x = 235,111.84