Finding the Third Proportional to 20,148 and 42,132

Step by Step Solution

1. Step 1: Write the proportion equation
   20,148 : 42,132 = 42,132 : x
2. Step 2: Convert to fraction form
   20,148/42,132 = 42,132/x
3. Step 3: Cross multiply
   20,148x = 42,132 × 42,132
4. Step 4: Simplify right side
   20,148x = 1,775,105,424
5. Step 5: Solve for x
   x = 1,775,105,424/20,148
6. Step 6: Final answer
   x = 88,103.31