Finding the Third Proportional to 368,428.50 and 550,361.25

Step by Step Solution

1. Step 1: Write the proportion equation
   368,428.50 : 550,361.25 = 550,361.25 : x
2. Step 2: Convert to fraction form
   368,428.50/550,361.25 = 550,361.25/x
3. Step 3: Cross multiply
   368,428.50x = 550,361.25 × 550,361.25
4. Step 4: Simplify right side
   368,428.50x = 302,897,505,501.56
5. Step 5: Solve for x
   x = 302,897,505,501.56/368,428.50
6. Step 6: Final answer
   x = 822,133.75