Finding the Third Proportional to 78,469.50 and 100,751.75

Step by Step Solution

1. Step 1: Write the proportion equation
   78,469.50 : 100,751.75 = 100,751.75 : x
2. Step 2: Convert to fraction form
   78,469.50/100,751.75 = 100,751.75/x
3. Step 3: Cross multiply
   78,469.50x = 100,751.75 × 100,751.75
4. Step 4: Simplify right side
   78,469.50x = 10,150,915,128.06
5. Step 5: Solve for x
   x = 10,150,915,128.06/78,469.50
6. Step 6: Final answer
   x = 129,361.28