Finding the Third Proportional to 57,109.50 and 126,459

Step by Step Solution

1. Step 1: Write the proportion equation
   57,109.50 : 126,459 = 126,459 : x
2. Step 2: Convert to fraction form
   57,109.50/126,459 = 126,459/x
3. Step 3: Cross multiply
   57,109.50x = 126,459 × 126,459
4. Step 4: Simplify right side
   57,109.50x = 15,991,878,681
5. Step 5: Solve for x
   x = 15,991,878,681/57,109.50
6. Step 6: Final answer
   x = 280,021.34