Finding the Third Proportional to 621,433 and 1,361,434

Step by Step Solution

1. Step 1: Write the proportion equation
   621,433 : 1,361,434 = 1,361,434 : x
2. Step 2: Convert to fraction form
   621,433/1,361,434 = 1,361,434/x
3. Step 3: Cross multiply
   621,433x = 1,361,434 × 1,361,434
4. Step 4: Simplify right side
   621,433x = 1,853,502,536,356
5. Step 5: Solve for x
   x = 1,853,502,536,356/621,433
6. Step 6: Final answer
   x = 2,982,626.50