Finding the Third Proportional to 61,362.50 and 126,640

Step by Step Solution

1. Step 1: Write the proportion equation
   61,362.50 : 126,640 = 126,640 : x
2. Step 2: Convert to fraction form
   61,362.50/126,640 = 126,640/x
3. Step 3: Cross multiply
   61,362.50x = 126,640 × 126,640
4. Step 4: Simplify right side
   61,362.50x = 16,037,689,600
5. Step 5: Solve for x
   x = 16,037,689,600/61,362.50
6. Step 6: Final answer
   x = 261,359.78