Finding the Third Proportional to 86,011.50 and 126,488

Step by Step Solution

1. Step 1: Write the proportion equation
   86,011.50 : 126,488 = 126,488 : x
2. Step 2: Convert to fraction form
   86,011.50/126,488 = 126,488/x
3. Step 3: Cross multiply
   86,011.50x = 126,488 × 126,488
4. Step 4: Simplify right side
   86,011.50x = 15,999,214,144
5. Step 5: Solve for x
   x = 15,999,214,144/86,011.50
6. Step 6: Final answer
   x = 186,012.50