Finding the Third Proportional to 621,548 and 1,361,212

Step by Step Solution

1. Step 1: Write the proportion equation
   621,548 : 1,361,212 = 1,361,212 : x
2. Step 2: Convert to fraction form
   621,548/1,361,212 = 1,361,212/x
3. Step 3: Cross multiply
   621,548x = 1,361,212 × 1,361,212
4. Step 4: Simplify right side
   621,548x = 1,852,898,108,944
5. Step 5: Solve for x
   x = 1,852,898,108,944/621,548
6. Step 6: Final answer
   x = 2,981,102.20