Finding the Third Proportional to 21,672 and 34,389

Step by Step Solution

1. Step 1: Write the proportion equation
   21,672 : 34,389 = 34,389 : x
2. Step 2: Convert to fraction form
   21,672/34,389 = 34,389/x
3. Step 3: Cross multiply
   21,672x = 34,389 × 34,389
4. Step 4: Simplify right side
   21,672x = 1,182,603,321
5. Step 5: Solve for x
   x = 1,182,603,321/21,672
6. Step 6: Final answer
   x = 54,568.26