Finding the Third Proportional to 397,672 and 602,299.50

Step by Step Solution

1. Step 1: Write the proportion equation
   397,672 : 602,299.50 = 602,299.50 : x
2. Step 2: Convert to fraction form
   397,672/602,299.50 = 602,299.50/x
3. Step 3: Cross multiply
   397,672x = 602,299.50 × 602,299.50
4. Step 4: Simplify right side
   397,672x = 362,764,687,700.25
5. Step 5: Solve for x
   x = 362,764,687,700.25/397,672
6. Step 6: Final answer
   x = 912,220.84