Finding the Third Proportional to 65,688.50 and 136,048

Step by Step Solution

1. Step 1: Write the proportion equation
   65,688.50 : 136,048 = 136,048 : x
2. Step 2: Convert to fraction form
   65,688.50/136,048 = 136,048/x
3. Step 3: Cross multiply
   65,688.50x = 136,048 × 136,048
4. Step 4: Simplify right side
   65,688.50x = 18,509,058,304
5. Step 5: Solve for x
   x = 18,509,058,304/65,688.50
6. Step 6: Final answer
   x = 281,770.15