Finding the Third Proportional to 105,602 and 219,910

Step by Step Solution

1. Step 1: Write the proportion equation
   105,602 : 219,910 = 219,910 : x
2. Step 2: Convert to fraction form
   105,602/219,910 = 219,910/x
3. Step 3: Cross multiply
   105,602x = 219,910 × 219,910
4. Step 4: Simplify right side
   105,602x = 48,360,408,100
5. Step 5: Solve for x
   x = 48,360,408,100/105,602
6. Step 6: Final answer
   x = 457,949.74