Finding the Third Proportional to 126,991.50 and 271,479

Step by Step Solution

1. Step 1: Write the proportion equation
   126,991.50 : 271,479 = 271,479 : x
2. Step 2: Convert to fraction form
   126,991.50/271,479 = 271,479/x
3. Step 3: Cross multiply
   126,991.50x = 271,479 × 271,479
4. Step 4: Simplify right side
   126,991.50x = 73,700,847,441
5. Step 5: Solve for x
   x = 73,700,847,441/126,991.50
6. Step 6: Final answer
   x = 580,360.48