Finding the Third Proportional to 67,636.31 and 105,138.56

Step by Step Solution

1. Step 1: Write the proportion equation
   67,636.31 : 105,138.56 = 105,138.56 : x
2. Step 2: Convert to fraction form
   67,636.31/105,138.56 = 105,138.56/x
3. Step 3: Cross multiply
   67,636.31x = 105,138.56 × 105,138.56
4. Step 4: Simplify right side
   67,636.31x = 11,054,117,324.57
5. Step 5: Solve for x
   x = 11,054,117,324.57/67,636.31
6. Step 6: Final answer
   x = 163,434.65