Finding the Third Proportional to 140,998 and 215,961

Step by Step Solution

1. Step 1: Write the proportion equation
   140,998 : 215,961 = 215,961 : x
2. Step 2: Convert to fraction form
   140,998/215,961 = 215,961/x
3. Step 3: Cross multiply
   140,998x = 215,961 × 215,961
4. Step 4: Simplify right side
   140,998x = 46,639,153,521
5. Step 5: Solve for x
   x = 46,639,153,521/140,998
6. Step 6: Final answer
   x = 330,778.83