Finding the Third Proportional to 135,676.50 and 298,419

Step by Step Solution

1. Step 1: Write the proportion equation
   135,676.50 : 298,419 = 298,419 : x
2. Step 2: Convert to fraction form
   135,676.50/298,419 = 298,419/x
3. Step 3: Cross multiply
   135,676.50x = 298,419 × 298,419
4. Step 4: Simplify right side
   135,676.50x = 89,053,899,561
5. Step 5: Solve for x
   x = 89,053,899,561/135,676.50
6. Step 6: Final answer
   x = 656,369.38