Finding the Third Proportional to 410,208 and 620,971.50

Step by Step Solution

1. Step 1: Write the proportion equation
   410,208 : 620,971.50 = 620,971.50 : x
2. Step 2: Convert to fraction form
   410,208/620,971.50 = 620,971.50/x
3. Step 3: Cross multiply
   410,208x = 620,971.50 × 620,971.50
4. Step 4: Simplify right side
   410,208x = 385,605,603,812.25
5. Step 5: Solve for x
   x = 385,605,603,812.25/410,208
6. Step 6: Final answer
   x = 940,024.58