Finding the Third Proportional to 142,131 and 307,065

Step by Step Solution

1. Step 1: Write the proportion equation
   142,131 : 307,065 = 307,065 : x
2. Step 2: Convert to fraction form
   142,131/307,065 = 307,065/x
3. Step 3: Cross multiply
   142,131x = 307,065 × 307,065
4. Step 4: Simplify right side
   142,131x = 94,288,914,225
5. Step 5: Solve for x
   x = 94,288,914,225/142,131
6. Step 6: Final answer
   x = 663,394.43