Finding the Third Proportional to 57,091.50 and 126,423

Step by Step Solution

1. Step 1: Write the proportion equation
   57,091.50 : 126,423 = 126,423 : x
2. Step 2: Convert to fraction form
   57,091.50/126,423 = 126,423/x
3. Step 3: Cross multiply
   57,091.50x = 126,423 × 126,423
4. Step 4: Simplify right side
   57,091.50x = 15,982,774,929
5. Step 5: Solve for x
   x = 15,982,774,929/57,091.50
6. Step 6: Final answer
   x = 279,950.17