Finding the Third Proportional to 388.07 and 853.03

Step by Step Solution

1. Step 1: Write the proportion equation
   388.07 : 853.03 = 853.03 : x
2. Step 2: Convert to fraction form
   388.07/853.03 = 853.03/x
3. Step 3: Cross multiply
   388.07x = 853.03 × 853.03
4. Step 4: Simplify right side
   388.07x = 727,662.31
5. Step 5: Solve for x
   x = 727,662.31/388.07
6. Step 6: Final answer
   x = 1,875.07