Finding the Third Proportional to 10,388 and 14,406

Step by Step Solution

1. Step 1: Write the proportion equation
   10,388 : 14,406 = 14,406 : x
2. Step 2: Convert to fraction form
   10,388/14,406 = 14,406/x
3. Step 3: Cross multiply
   10,388x = 14,406 × 14,406
4. Step 4: Simplify right side
   10,388x = 207,532,836
5. Step 5: Solve for x
   x = 207,532,836/10,388
6. Step 6: Final answer
   x = 19,978.13