Finding the Third Proportional to 387,667 and 822,300

Step by Step Solution

1. Step 1: Write the proportion equation
   387,667 : 822,300 = 822,300 : x
2. Step 2: Convert to fraction form
   387,667/822,300 = 822,300/x
3. Step 3: Cross multiply
   387,667x = 822,300 × 822,300
4. Step 4: Simplify right side
   387,667x = 676,177,290,000
5. Step 5: Solve for x
   x = 676,177,290,000/387,667
6. Step 6: Final answer
   x = 1,744,221.95