Finding the Third Proportional to 410,180.50 and 620,938

Step by Step Solution

1. Step 1: Write the proportion equation
   410,180.50 : 620,938 = 620,938 : x
2. Step 2: Convert to fraction form
   410,180.50/620,938 = 620,938/x
3. Step 3: Cross multiply
   410,180.50x = 620,938 × 620,938
4. Step 4: Simplify right side
   410,180.50x = 385,563,999,844
5. Step 5: Solve for x
   x = 385,563,999,844/410,180.50
6. Step 6: Final answer
   x = 939,986.18