Finding the Third Proportional to 17,100 and 39,570

Step by Step Solution

1. Step 1: Write the proportion equation
   17,100 : 39,570 = 39,570 : x
2. Step 2: Convert to fraction form
   17,100/39,570 = 39,570/x
3. Step 3: Cross multiply
   17,100x = 39,570 × 39,570
4. Step 4: Simplify right side
   17,100x = 1,565,784,900
5. Step 5: Solve for x
   x = 1,565,784,900/17,100
6. Step 6: Final answer
   x = 91,566.37