Finding the Third Proportional to 143,766.56 and 217,664.72

Step by Step Solution

1. Step 1: Write the proportion equation
   143,766.56 : 217,664.72 = 217,664.72 : x
2. Step 2: Convert to fraction form
   143,766.56/217,664.72 = 217,664.72/x
3. Step 3: Cross multiply
   143,766.56x = 217,664.72 × 217,664.72
4. Step 4: Simplify right side
   143,766.56x = 47,377,929,788.52
5. Step 5: Solve for x
   x = 47,377,929,788.52/143,766.56
6. Step 6: Final answer
   x = 329,547.63