Finding the Third Proportional to 15,388 and 21,774

Step by Step Solution

1. Step 1: Write the proportion equation
   15,388 : 21,774 = 21,774 : x
2. Step 2: Convert to fraction form
   15,388/21,774 = 21,774/x
3. Step 3: Cross multiply
   15,388x = 21,774 × 21,774
4. Step 4: Simplify right side
   15,388x = 474,107,076
5. Step 5: Solve for x
   x = 474,107,076/15,388
6. Step 6: Final answer
   x = 30,810.18