Finding the Third Proportional to 67,636.81 and 105,139.31

Step by Step Solution

1. Step 1: Write the proportion equation
   67,636.81 : 105,139.31 = 105,139.31 : x
2. Step 2: Convert to fraction form
   67,636.81/105,139.31 = 105,139.31/x
3. Step 3: Cross multiply
   67,636.81x = 105,139.31 × 105,139.31
4. Step 4: Simplify right side
   67,636.81x = 11,054,275,032.97
5. Step 5: Solve for x
   x = 11,054,275,032.97/67,636.81
6. Step 6: Final answer
   x = 163,435.78