Finding the Third Proportional to 142,426 and 303,913

Step by Step Solution

1. Step 1: Write the proportion equation
   142,426 : 303,913 = 303,913 : x
2. Step 2: Convert to fraction form
   142,426/303,913 = 303,913/x
3. Step 3: Cross multiply
   142,426x = 303,913 × 303,913
4. Step 4: Simplify right side
   142,426x = 92,363,111,569
5. Step 5: Solve for x
   x = 92,363,111,569/142,426
6. Step 6: Final answer
   x = 648,498.95