Finding the Third Proportional to 57,580.50 and 123,909

Step by Step Solution

1. Step 1: Write the proportion equation
   57,580.50 : 123,909 = 123,909 : x
2. Step 2: Convert to fraction form
   57,580.50/123,909 = 123,909/x
3. Step 3: Cross multiply
   57,580.50x = 123,909 × 123,909
4. Step 4: Simplify right side
   57,580.50x = 15,353,440,281
5. Step 5: Solve for x
   x = 15,353,440,281/57,580.50
6. Step 6: Final answer
   x = 266,643.05