Finding the Third Proportional to 126,340 and 196,890

Step by Step Solution

1. Step 1: Write the proportion equation
   126,340 : 196,890 = 196,890 : x
2. Step 2: Convert to fraction form
   126,340/196,890 = 196,890/x
3. Step 3: Cross multiply
   126,340x = 196,890 × 196,890
4. Step 4: Simplify right side
   126,340x = 38,765,672,100
5. Step 5: Solve for x
   x = 38,765,672,100/126,340
6. Step 6: Final answer
   x = 306,836.09