Finding the Third Proportional to 219,214 and 328,851.50

Step by Step Solution

1. Step 1: Write the proportion equation
   219,214 : 328,851.50 = 328,851.50 : x
2. Step 2: Convert to fraction form
   219,214/328,851.50 = 328,851.50/x
3. Step 3: Cross multiply
   219,214x = 328,851.50 × 328,851.50
4. Step 4: Simplify right side
   219,214x = 108,143,309,052.25
5. Step 5: Solve for x
   x = 108,143,309,052.25/219,214
6. Step 6: Final answer
   x = 493,323.00