Finding the Third Proportional to 129,612 and 196,228.50

Step by Step Solution

1. Step 1: Write the proportion equation
   129,612 : 196,228.50 = 196,228.50 : x
2. Step 2: Convert to fraction form
   129,612/196,228.50 = 196,228.50/x
3. Step 3: Cross multiply
   129,612x = 196,228.50 × 196,228.50
4. Step 4: Simplify right side
   129,612x = 38,505,624,212.25
5. Step 5: Solve for x
   x = 38,505,624,212.25/129,612
6. Step 6: Final answer
   x = 297,083.79