Finding the Third Proportional to 142,563 and 331,494

Step by Step Solution

1. Step 1: Write the proportion equation
   142,563 : 331,494 = 331,494 : x
2. Step 2: Convert to fraction form
   142,563/331,494 = 331,494/x
3. Step 3: Cross multiply
   142,563x = 331,494 × 331,494
4. Step 4: Simplify right side
   142,563x = 109,888,272,036
5. Step 5: Solve for x
   x = 109,888,272,036/142,563
6. Step 6: Final answer
   x = 770,804.99