Finding the Third Proportional to 144,176 and 316,418.50

Step by Step Solution

1. Step 1: Write the proportion equation
   144,176 : 316,418.50 = 316,418.50 : x
2. Step 2: Convert to fraction form
   144,176/316,418.50 = 316,418.50/x
3. Step 3: Cross multiply
   144,176x = 316,418.50 × 316,418.50
4. Step 4: Simplify right side
   144,176x = 100,120,667,142.25
5. Step 5: Solve for x
   x = 100,120,667,142.25/144,176
6. Step 6: Final answer
   x = 694,433.66