Finding the Third Proportional to 621,648 and 1,353,996

Step by Step Solution

1. Step 1: Write the proportion equation
   621,648 : 1,353,996 = 1,353,996 : x
2. Step 2: Convert to fraction form
   621,648/1,353,996 = 1,353,996/x
3. Step 3: Cross multiply
   621,648x = 1,353,996 × 1,353,996
4. Step 4: Simplify right side
   621,648x = 1,833,305,168,016
5. Step 5: Solve for x
   x = 1,833,305,168,016/621,648
6. Step 6: Final answer
   x = 2,949,104.91