Finding the Third Proportional to 9,415 and 20,470

Step by Step Solution

1. Step 1: Write the proportion equation
   9,415 : 20,470 = 20,470 : x
2. Step 2: Convert to fraction form
   9,415/20,470 = 20,470/x
3. Step 3: Cross multiply
   9,415x = 20,470 × 20,470
4. Step 4: Simplify right side
   9,415x = 419,020,900
5. Step 5: Solve for x
   x = 419,020,900/9,415
6. Step 6: Final answer
   x = 44,505.67