Finding the Third Proportional to 67,617.28 and 105,112.69

Step by Step Solution

1. Step 1: Write the proportion equation
   67,617.28 : 105,112.69 = 105,112.69 : x
2. Step 2: Convert to fraction form
   67,617.28/105,112.69 = 105,112.69/x
3. Step 3: Cross multiply
   67,617.28x = 105,112.69 × 105,112.69
4. Step 4: Simplify right side
   67,617.28x = 11,048,677,073.47
5. Step 5: Solve for x
   x = 11,048,677,073.47/67,617.28
6. Step 6: Final answer
   x = 163,400.20