Finding the Third Proportional to 397,684 and 602,308.50

Step by Step Solution

1. Step 1: Write the proportion equation
   397,684 : 602,308.50 = 602,308.50 : x
2. Step 2: Convert to fraction form
   397,684/602,308.50 = 602,308.50/x
3. Step 3: Cross multiply
   397,684x = 602,308.50 × 602,308.50
4. Step 4: Simplify right side
   397,684x = 362,775,529,172.25
5. Step 5: Solve for x
   x = 362,775,529,172.25/397,684
6. Step 6: Final answer
   x = 912,220.58