Finding the Third Proportional to 638,626 and 1,064,338

Step by Step Solution

1. Step 1: Write the proportion equation
   638,626 : 1,064,338 = 1,064,338 : x
2. Step 2: Convert to fraction form
   638,626/1,064,338 = 1,064,338/x
3. Step 3: Cross multiply
   638,626x = 1,064,338 × 1,064,338
4. Step 4: Simplify right side
   638,626x = 1,132,815,378,244
5. Step 5: Solve for x
   x = 1,132,815,378,244/638,626
6. Step 6: Final answer
   x = 1,773,832.22