Finding the Third Proportional to 10,620 and 17,386

Step by Step Solution

1. Step 1: Write the proportion equation
   10,620 : 17,386 = 17,386 : x
2. Step 2: Convert to fraction form
   10,620/17,386 = 17,386/x
3. Step 3: Cross multiply
   10,620x = 17,386 × 17,386
4. Step 4: Simplify right side
   10,620x = 302,272,996
5. Step 5: Solve for x
   x = 302,272,996/10,620
6. Step 6: Final answer
   x = 28,462.62