Finding the Third Proportional to 610,637 and 1,322,920

Step by Step Solution

1. Step 1: Write the proportion equation
   610,637 : 1,322,920 = 1,322,920 : x
2. Step 2: Convert to fraction form
   610,637/1,322,920 = 1,322,920/x
3. Step 3: Cross multiply
   610,637x = 1,322,920 × 1,322,920
4. Step 4: Simplify right side
   610,637x = 1,750,117,326,400
5. Step 5: Solve for x
   x = 1,750,117,326,400/610,637
6. Step 6: Final answer
   x = 2,866,051.89