Finding the Third Proportional to 51,288 and 105,132

Step by Step Solution

1. Step 1: Write the proportion equation
   51,288 : 105,132 = 105,132 : x
2. Step 2: Convert to fraction form
   51,288/105,132 = 105,132/x
3. Step 3: Cross multiply
   51,288x = 105,132 × 105,132
4. Step 4: Simplify right side
   51,288x = 11,052,737,424
5. Step 5: Solve for x
   x = 11,052,737,424/51,288
6. Step 6: Final answer
   x = 215,503.38