Finding the Third Proportional to 129,441 and 172,048.50

Step by Step Solution

1. Step 1: Write the proportion equation
   129,441 : 172,048.50 = 172,048.50 : x
2. Step 2: Convert to fraction form
   129,441/172,048.50 = 172,048.50/x
3. Step 3: Cross multiply
   129,441x = 172,048.50 × 172,048.50
4. Step 4: Simplify right side
   129,441x = 29,600,686,352.25
5. Step 5: Solve for x
   x = 29,600,686,352.25/129,441
6. Step 6: Final answer
   x = 228,680.92