Finding the Third Proportional to 224,640 and 488,644

Step by Step Solution

1. Step 1: Write the proportion equation
   224,640 : 488,644 = 488,644 : x
2. Step 2: Convert to fraction form
   224,640/488,644 = 488,644/x
3. Step 3: Cross multiply
   224,640x = 488,644 × 488,644
4. Step 4: Simplify right side
   224,640x = 238,772,958,736
5. Step 5: Solve for x
   x = 238,772,958,736/224,640
6. Step 6: Final answer
   x = 1,062,913.81