Finding the Third Proportional to 302,680.50 and 664,404

Step by Step Solution

1. Step 1: Write the proportion equation
   302,680.50 : 664,404 = 664,404 : x
2. Step 2: Convert to fraction form
   302,680.50/664,404 = 664,404/x
3. Step 3: Cross multiply
   302,680.50x = 664,404 × 664,404
4. Step 4: Simplify right side
   302,680.50x = 441,432,675,216
5. Step 5: Solve for x
   x = 441,432,675,216/302,680.50
6. Step 6: Final answer
   x = 1,458,411.35