Finding the Third Proportional to 638,636 and 1,064,348

Step by Step Solution

1. Step 1: Write the proportion equation
   638,636 : 1,064,348 = 1,064,348 : x
2. Step 2: Convert to fraction form
   638,636/1,064,348 = 1,064,348/x
3. Step 3: Cross multiply
   638,636x = 1,064,348 × 1,064,348
4. Step 4: Simplify right side
   638,636x = 1,132,836,665,104
5. Step 5: Solve for x
   x = 1,132,836,665,104/638,636
6. Step 6: Final answer
   x = 1,773,837.78