Finding the Third Proportional to 621,433.50 and 1,361,436

Step by Step Solution

1. Step 1: Write the proportion equation
   621,433.50 : 1,361,436 = 1,361,436 : x
2. Step 2: Convert to fraction form
   621,433.50/1,361,436 = 1,361,436/x
3. Step 3: Cross multiply
   621,433.50x = 1,361,436 × 1,361,436
4. Step 4: Simplify right side
   621,433.50x = 1,853,507,982,096
5. Step 5: Solve for x
   x = 1,853,507,982,096/621,433.50
6. Step 6: Final answer
   x = 2,982,632.87