Finding the Third Proportional to 99,288 and 146,988

Step by Step Solution

1. Step 1: Write the proportion equation
   99,288 : 146,988 = 146,988 : x
2. Step 2: Convert to fraction form
   99,288/146,988 = 146,988/x
3. Step 3: Cross multiply
   99,288x = 146,988 × 146,988
4. Step 4: Simplify right side
   99,288x = 21,605,472,144
5. Step 5: Solve for x
   x = 21,605,472,144/99,288
6. Step 6: Final answer
   x = 217,604.06