Finding the Third Proportional to 65,349 and 143,145

Step by Step Solution

1. Step 1: Write the proportion equation
   65,349 : 143,145 = 143,145 : x
2. Step 2: Convert to fraction form
   65,349/143,145 = 143,145/x
3. Step 3: Cross multiply
   65,349x = 143,145 × 143,145
4. Step 4: Simplify right side
   65,349x = 20,490,491,025
5. Step 5: Solve for x
   x = 20,490,491,025/65,349
6. Step 6: Final answer
   x = 313,554.78