Finding the Third Proportional to 621,542 and 1,361,200

Step by Step Solution

1. Step 1: Write the proportion equation
   621,542 : 1,361,200 = 1,361,200 : x
2. Step 2: Convert to fraction form
   621,542/1,361,200 = 1,361,200/x
3. Step 3: Cross multiply
   621,542x = 1,361,200 × 1,361,200
4. Step 4: Simplify right side
   621,542x = 1,852,865,440,000
5. Step 5: Solve for x
   x = 1,852,865,440,000/621,542
6. Step 6: Final answer
   x = 2,981,078.41