Finding the Third Proportional to 231,868 and 488,638

Step by Step Solution

1. Step 1: Write the proportion equation
   231,868 : 488,638 = 488,638 : x
2. Step 2: Convert to fraction form
   231,868/488,638 = 488,638/x
3. Step 3: Cross multiply
   231,868x = 488,638 × 488,638
4. Step 4: Simplify right side
   231,868x = 238,767,095,044
5. Step 5: Solve for x
   x = 238,767,095,044/231,868
6. Step 6: Final answer
   x = 1,029,754.41