Finding the Third Proportional to 377,839.69 and 821,395.69

Step by Step Solution

1. Step 1: Write the proportion equation
   377,839.69 : 821,395.69 = 821,395.69 : x
2. Step 2: Convert to fraction form
   377,839.69/821,395.69 = 821,395.69/x
3. Step 3: Cross multiply
   377,839.69x = 821,395.69 × 821,395.69
4. Step 4: Simplify right side
   377,839.69x = 674,690,875,443.60
5. Step 5: Solve for x
   x = 674,690,875,443.60/377,839.69
6. Step 6: Final answer
   x = 1,785,653.80