Finding the Third Proportional to 57,456 and 126,090

Step by Step Solution

1. Step 1: Write the proportion equation
   57,456 : 126,090 = 126,090 : x
2. Step 2: Convert to fraction form
   57,456/126,090 = 126,090/x
3. Step 3: Cross multiply
   57,456x = 126,090 × 126,090
4. Step 4: Simplify right side
   57,456x = 15,898,688,100
5. Step 5: Solve for x
   x = 15,898,688,100/57,456
6. Step 6: Final answer
   x = 276,710.67