Finding the Third Proportional to 253,720 and 341,760

Step by Step Solution

1. Step 1: Write the proportion equation
   253,720 : 341,760 = 341,760 : x
2. Step 2: Convert to fraction form
   253,720/341,760 = 341,760/x
3. Step 3: Cross multiply
   253,720x = 341,760 × 341,760
4. Step 4: Simplify right side
   253,720x = 116,799,897,600
5. Step 5: Solve for x
   x = 116,799,897,600/253,720
6. Step 6: Final answer
   x = 460,349.59