Finding the Third Proportional to 56,642 and 132,288

Step by Step Solution

1. Step 1: Write the proportion equation
   56,642 : 132,288 = 132,288 : x
2. Step 2: Convert to fraction form
   56,642/132,288 = 132,288/x
3. Step 3: Cross multiply
   56,642x = 132,288 × 132,288
4. Step 4: Simplify right side
   56,642x = 17,500,114,944
5. Step 5: Solve for x
   x = 17,500,114,944/56,642
6. Step 6: Final answer
   x = 308,960.05