Finding the Third Proportional to 410,182 and 620,940

Step by Step Solution

1. Step 1: Write the proportion equation
   410,182 : 620,940 = 620,940 : x
2. Step 2: Convert to fraction form
   410,182/620,940 = 620,940/x
3. Step 3: Cross multiply
   410,182x = 620,940 × 620,940
4. Step 4: Simplify right side
   410,182x = 385,566,483,600
5. Step 5: Solve for x
   x = 385,566,483,600/410,182
6. Step 6: Final answer
   x = 939,988.79