Finding the Third Proportional to 17,621 and 27,290

Step by Step Solution

1. Step 1: Write the proportion equation
   17,621 : 27,290 = 27,290 : x
2. Step 2: Convert to fraction form
   17,621/27,290 = 27,290/x
3. Step 3: Cross multiply
   17,621x = 27,290 × 27,290
4. Step 4: Simplify right side
   17,621x = 744,744,100
5. Step 5: Solve for x
   x = 744,744,100/17,621
6. Step 6: Final answer
   x = 42,264.58