Finding the Third Proportional to 308,043 and 385,600.50

Step by Step Solution

1. Step 1: Write the proportion equation
   308,043 : 385,600.50 = 385,600.50 : x
2. Step 2: Convert to fraction form
   308,043/385,600.50 = 385,600.50/x
3. Step 3: Cross multiply
   308,043x = 385,600.50 × 385,600.50
4. Step 4: Simplify right side
   308,043x = 148,687,745,600.25
5. Step 5: Solve for x
   x = 148,687,745,600.25/308,043
6. Step 6: Final answer
   x = 482,685.03