Finding the Third Proportional to 638,746 and 1,064,515

Step by Step Solution

1. Step 1: Write the proportion equation
   638,746 : 1,064,515 = 1,064,515 : x
2. Step 2: Convert to fraction form
   638,746/1,064,515 = 1,064,515/x
3. Step 3: Cross multiply
   638,746x = 1,064,515 × 1,064,515
4. Step 4: Simplify right side
   638,746x = 1,133,192,185,225
5. Step 5: Solve for x
   x = 1,133,192,185,225/638,746
6. Step 6: Final answer
   x = 1,774,088.89