Finding the Third Proportional to 67,636.50 and 105,138.75

Step by Step Solution

1. Step 1: Write the proportion equation
   67,636.50 : 105,138.75 = 105,138.75 : x
2. Step 2: Convert to fraction form
   67,636.50/105,138.75 = 105,138.75/x
3. Step 3: Cross multiply
   67,636.50x = 105,138.75 × 105,138.75
4. Step 4: Simplify right side
   67,636.50x = 11,054,156,751.56
5. Step 5: Solve for x
   x = 11,054,156,751.56/67,636.50
6. Step 6: Final answer
   x = 163,434.78