Finding the Third Proportional to 820,375 and 1,259,290

Step by Step Solution

1. Step 1: Write the proportion equation
   820,375 : 1,259,290 = 1,259,290 : x
2. Step 2: Convert to fraction form
   820,375/1,259,290 = 1,259,290/x
3. Step 3: Cross multiply
   820,375x = 1,259,290 × 1,259,290
4. Step 4: Simplify right side
   820,375x = 1,585,811,304,100
5. Step 5: Solve for x
   x = 1,585,811,304,100/820,375
6. Step 6: Final answer
   x = 1,933,032.22