Finding the Third Proportional to 638,326 and 945,164

Step by Step Solution

1. Step 1: Write the proportion equation
   638,326 : 945,164 = 945,164 : x
2. Step 2: Convert to fraction form
   638,326/945,164 = 945,164/x
3. Step 3: Cross multiply
   638,326x = 945,164 × 945,164
4. Step 4: Simplify right side
   638,326x = 893,334,986,896
5. Step 5: Solve for x
   x = 893,334,986,896/638,326
6. Step 6: Final answer
   x = 1,399,496.47