Finding the Third Proportional to 621,550 and 1,361,216

Step by Step Solution

1. Step 1: Write the proportion equation
   621,550 : 1,361,216 = 1,361,216 : x
2. Step 2: Convert to fraction form
   621,550/1,361,216 = 1,361,216/x
3. Step 3: Cross multiply
   621,550x = 1,361,216 × 1,361,216
4. Step 4: Simplify right side
   621,550x = 1,852,908,998,656
5. Step 5: Solve for x
   x = 1,852,908,998,656/621,550
6. Step 6: Final answer
   x = 2,981,110.13