Finding the Third Proportional to 13,170 and 31,479

Step by Step Solution

1. Step 1: Write the proportion equation
   13,170 : 31,479 = 31,479 : x
2. Step 2: Convert to fraction form
   13,170/31,479 = 31,479/x
3. Step 3: Cross multiply
   13,170x = 31,479 × 31,479
4. Step 4: Simplify right side
   13,170x = 990,927,441
5. Step 5: Solve for x
   x = 990,927,441/13,170
6. Step 6: Final answer
   x = 75,241.26