Finding the Third Proportional to 388,563 and 836,174.63

Step by Step Solution

1. Step 1: Write the proportion equation
   388,563 : 836,174.63 = 836,174.63 : x
2. Step 2: Convert to fraction form
   388,563/836,174.63 = 836,174.63/x
3. Step 3: Cross multiply
   388,563x = 836,174.63 × 836,174.63
4. Step 4: Simplify right side
   388,563x = 699,188,003,493.89
5. Step 5: Solve for x
   x = 699,188,003,493.89/388,563
6. Step 6: Final answer
   x = 1,799,419.92