Finding the Third Proportional to 1,397,471 and 2,117,166

Step by Step Solution

1. Step 1: Write the proportion equation
   1,397,471 : 2,117,166 = 2,117,166 : x
2. Step 2: Convert to fraction form
   1,397,471/2,117,166 = 2,117,166/x
3. Step 3: Cross multiply
   1,397,471x = 2,117,166 × 2,117,166
4. Step 4: Simplify right side
   1,397,471x = 4,482,391,871,556
5. Step 5: Solve for x
   x = 4,482,391,871,556/1,397,471
6. Step 6: Final answer
   x = 3,207,502.60