Finding the Third Proportional to 410,173.50 and 620,928

Step by Step Solution

1. Step 1: Write the proportion equation
   410,173.50 : 620,928 = 620,928 : x
2. Step 2: Convert to fraction form
   410,173.50/620,928 = 620,928/x
3. Step 3: Cross multiply
   410,173.50x = 620,928 × 620,928
4. Step 4: Simplify right side
   410,173.50x = 385,551,581,184
5. Step 5: Solve for x
   x = 385,551,581,184/410,173.50
6. Step 6: Final answer
   x = 939,971.94