Finding the Third Proportional to 60,105 and 128,548.50

Step by Step Solution

1. Step 1: Write the proportion equation
   60,105 : 128,548.50 = 128,548.50 : x
2. Step 2: Convert to fraction form
   60,105/128,548.50 = 128,548.50/x
3. Step 3: Cross multiply
   60,105x = 128,548.50 × 128,548.50
4. Step 4: Simplify right side
   60,105x = 16,524,716,852.25
5. Step 5: Solve for x
   x = 16,524,716,852.25/60,105
6. Step 6: Final answer
   x = 274,930.82