Finding the Third Proportional to 638,294 and 945,116

Step by Step Solution

1. Step 1: Write the proportion equation
   638,294 : 945,116 = 945,116 : x
2. Step 2: Convert to fraction form
   638,294/945,116 = 945,116/x
3. Step 3: Cross multiply
   638,294x = 945,116 × 945,116
4. Step 4: Simplify right side
   638,294x = 893,244,253,456
5. Step 5: Solve for x
   x = 893,244,253,456/638,294
6. Step 6: Final answer
   x = 1,399,424.49