Finding the Third Proportional to 1,397,469 and 2,117,163

Step by Step Solution

1. Step 1: Write the proportion equation
   1,397,469 : 2,117,163 = 2,117,163 : x
2. Step 2: Convert to fraction form
   1,397,469/2,117,163 = 2,117,163/x
3. Step 3: Cross multiply
   1,397,469x = 2,117,163 × 2,117,163
4. Step 4: Simplify right side
   1,397,469x = 4,482,379,168,569
5. Step 5: Solve for x
   x = 4,482,379,168,569/1,397,469
6. Step 6: Final answer
   x = 3,207,498.10