Finding the Third Proportional to 397,665.50 and 602,287

Step by Step Solution

1. Step 1: Write the proportion equation
   397,665.50 : 602,287 = 602,287 : x
2. Step 2: Convert to fraction form
   397,665.50/602,287 = 602,287/x
3. Step 3: Cross multiply
   397,665.50x = 602,287 × 602,287
4. Step 4: Simplify right side
   397,665.50x = 362,749,630,369
5. Step 5: Solve for x
   x = 362,749,630,369/397,665.50
6. Step 6: Final answer
   x = 912,197.89