Finding the Third Proportional to 61,618.50 and 126,151.50

Step by Step Solution

1. Step 1: Write the proportion equation
   61,618.50 : 126,151.50 = 126,151.50 : x
2. Step 2: Convert to fraction form
   61,618.50/126,151.50 = 126,151.50/x
3. Step 3: Cross multiply
   61,618.50x = 126,151.50 × 126,151.50
4. Step 4: Simplify right side
   61,618.50x = 15,914,200,952.25
5. Step 5: Solve for x
   x = 15,914,200,952.25/61,618.50
6. Step 6: Final answer
   x = 258,269.85