Finding the Third Proportional to 21,788 and 34,518

Step by Step Solution

1. Step 1: Write the proportion equation
   21,788 : 34,518 = 34,518 : x
2. Step 2: Convert to fraction form
   21,788/34,518 = 34,518/x
3. Step 3: Cross multiply
   21,788x = 34,518 × 34,518
4. Step 4: Simplify right side
   21,788x = 1,191,492,324
5. Step 5: Solve for x
   x = 1,191,492,324/21,788
6. Step 6: Final answer
   x = 54,685.71