Finding the Third Proportional to 56,431.50 and 126,231

Step by Step Solution

1. Step 1: Write the proportion equation
   56,431.50 : 126,231 = 126,231 : x
2. Step 2: Convert to fraction form
   56,431.50/126,231 = 126,231/x
3. Step 3: Cross multiply
   56,431.50x = 126,231 × 126,231
4. Step 4: Simplify right side
   56,431.50x = 15,934,265,361
5. Step 5: Solve for x
   x = 15,934,265,361/56,431.50
6. Step 6: Final answer
   x = 282,364.73