Finding the Third Proportional to 71,576 and 143,145

Step by Step Solution

1. Step 1: Write the proportion equation
   71,576 : 143,145 = 143,145 : x
2. Step 2: Convert to fraction form
   71,576/143,145 = 143,145/x
3. Step 3: Cross multiply
   71,576x = 143,145 × 143,145
4. Step 4: Simplify right side
   71,576x = 20,490,491,025
5. Step 5: Solve for x
   x = 20,490,491,025/71,576
6. Step 6: Final answer
   x = 286,276.00