Finding the Third Proportional to 17,070 and 34,990

Step by Step Solution

1. Step 1: Write the proportion equation
   17,070 : 34,990 = 34,990 : x
2. Step 2: Convert to fraction form
   17,070/34,990 = 34,990/x
3. Step 3: Cross multiply
   17,070x = 34,990 × 34,990
4. Step 4: Simplify right side
   17,070x = 1,224,300,100
5. Step 5: Solve for x
   x = 1,224,300,100/17,070
6. Step 6: Final answer
   x = 71,722.33