Finding the Third Proportional to 67,624.72 and 105,128.59

Step by Step Solution

1. Step 1: Write the proportion equation
   67,624.72 : 105,128.59 = 105,128.59 : x
2. Step 2: Convert to fraction form
   67,624.72/105,128.59 = 105,128.59/x
3. Step 3: Cross multiply
   67,624.72x = 105,128.59 × 105,128.59
4. Step 4: Simplify right side
   67,624.72x = 11,052,019,786.55
5. Step 5: Solve for x
   x = 11,052,019,786.55/67,624.72
6. Step 6: Final answer
   x = 163,431.66