Finding the Third Proportional to 438,213.38 and 660,204

Step by Step Solution

1. Step 1: Write the proportion equation
   438,213.38 : 660,204 = 660,204 : x
2. Step 2: Convert to fraction form
   438,213.38/660,204 = 660,204/x
3. Step 3: Cross multiply
   438,213.38x = 660,204 × 660,204
4. Step 4: Simplify right side
   438,213.38x = 435,869,321,616
5. Step 5: Solve for x
   x = 435,869,321,616/438,213.38
6. Step 6: Final answer
   x = 994,650.89