Finding the Third Proportional to 138,456 and 303,116

Step by Step Solution

1. Step 1: Write the proportion equation
   138,456 : 303,116 = 303,116 : x
2. Step 2: Convert to fraction form
   138,456/303,116 = 303,116/x
3. Step 3: Cross multiply
   138,456x = 303,116 × 303,116
4. Step 4: Simplify right side
   138,456x = 91,879,309,456
5. Step 5: Solve for x
   x = 91,879,309,456/138,456
6. Step 6: Final answer
   x = 663,599.33