Finding the Third Proportional to 377,620 and 820,980

Step by Step Solution

1. Step 1: Write the proportion equation
   377,620 : 820,980 = 820,980 : x
2. Step 2: Convert to fraction form
   377,620/820,980 = 820,980/x
3. Step 3: Cross multiply
   377,620x = 820,980 × 820,980
4. Step 4: Simplify right side
   377,620x = 674,008,160,400
5. Step 5: Solve for x
   x = 674,008,160,400/377,620
6. Step 6: Final answer
   x = 1,784,884.70