Finding the Third Proportional to 144,378 and 223,131

Step by Step Solution

1. Step 1: Write the proportion equation
   144,378 : 223,131 = 223,131 : x
2. Step 2: Convert to fraction form
   144,378/223,131 = 223,131/x
3. Step 3: Cross multiply
   144,378x = 223,131 × 223,131
4. Step 4: Simplify right side
   144,378x = 49,787,443,161
5. Step 5: Solve for x
   x = 49,787,443,161/144,378
6. Step 6: Final answer
   x = 344,840.93