Finding the Third Proportional to 215,788.50 and 326,682

Step by Step Solution

1. Step 1: Write the proportion equation
   215,788.50 : 326,682 = 326,682 : x
2. Step 2: Convert to fraction form
   215,788.50/326,682 = 326,682/x
3. Step 3: Cross multiply
   215,788.50x = 326,682 × 326,682
4. Step 4: Simplify right side
   215,788.50x = 106,721,129,124
5. Step 5: Solve for x
   x = 106,721,129,124/215,788.50
6. Step 6: Final answer
   x = 494,563.56