Finding the Third Proportional to 638,816 and 1,064,736

Step by Step Solution

1. Step 1: Write the proportion equation
   638,816 : 1,064,736 = 1,064,736 : x
2. Step 2: Convert to fraction form
   638,816/1,064,736 = 1,064,736/x
3. Step 3: Cross multiply
   638,816x = 1,064,736 × 1,064,736
4. Step 4: Simplify right side
   638,816x = 1,133,662,749,696
5. Step 5: Solve for x
   x = 1,133,662,749,696/638,816
6. Step 6: Final answer
   x = 1,774,631.11