Finding the Third Proportional to 60,128 and 132,288

Step by Step Solution

1. Step 1: Write the proportion equation
   60,128 : 132,288 = 132,288 : x
2. Step 2: Convert to fraction form
   60,128/132,288 = 132,288/x
3. Step 3: Cross multiply
   60,128x = 132,288 × 132,288
4. Step 4: Simplify right side
   60,128x = 17,500,114,944
5. Step 5: Solve for x
   x = 17,500,114,944/60,128
6. Step 6: Final answer
   x = 291,047.68