Finding the Third Proportional to 638,744 and 1,064,512

Step by Step Solution

1. Step 1: Write the proportion equation
   638,744 : 1,064,512 = 1,064,512 : x
2. Step 2: Convert to fraction form
   638,744/1,064,512 = 1,064,512/x
3. Step 3: Cross multiply
   638,744x = 1,064,512 × 1,064,512
4. Step 4: Simplify right side
   638,744x = 1,133,185,798,144
5. Step 5: Solve for x
   x = 1,133,185,798,144/638,744
6. Step 6: Final answer
   x = 1,774,084.45