Finding the Third Proportional to 302,857.50 and 443,269.50

Step by Step Solution

1. Step 1: Write the proportion equation
   302,857.50 : 443,269.50 = 443,269.50 : x
2. Step 2: Convert to fraction form
   302,857.50/443,269.50 = 443,269.50/x
3. Step 3: Cross multiply
   302,857.50x = 443,269.50 × 443,269.50
4. Step 4: Simplify right side
   302,857.50x = 196,487,849,630.25
5. Step 5: Solve for x
   x = 196,487,849,630.25/302,857.50
6. Step 6: Final answer
   x = 648,779.87