Finding the Third Proportional to 86,143.50 and 126,751.50

Step by Step Solution

1. Step 1: Write the proportion equation
   86,143.50 : 126,751.50 = 126,751.50 : x
2. Step 2: Convert to fraction form
   86,143.50/126,751.50 = 126,751.50/x
3. Step 3: Cross multiply
   86,143.50x = 126,751.50 × 126,751.50
4. Step 4: Simplify right side
   86,143.50x = 16,065,942,752.25
5. Step 5: Solve for x
   x = 16,065,942,752.25/86,143.50
6. Step 6: Final answer
   x = 186,502.09