Finding the Third Proportional to 112,638 and 243,864

Step by Step Solution

1. Step 1: Write the proportion equation
   112,638 : 243,864 = 243,864 : x
2. Step 2: Convert to fraction form
   112,638/243,864 = 243,864/x
3. Step 3: Cross multiply
   112,638x = 243,864 × 243,864
4. Step 4: Simplify right side
   112,638x = 59,469,650,496
5. Step 5: Solve for x
   x = 59,469,650,496/112,638
6. Step 6: Final answer
   x = 527,971.47