Finding the Third Proportional to 388.88 and 846.10

Step by Step Solution

1. Step 1: Write the proportion equation
   388.88 : 846.10 = 846.10 : x
2. Step 2: Convert to fraction form
   388.88/846.10 = 846.10/x
3. Step 3: Cross multiply
   388.88x = 846.10 × 846.10
4. Step 4: Simplify right side
   388.88x = 715,879.59
5. Step 5: Solve for x
   x = 715,879.59/388.88
6. Step 6: Final answer
   x = 1,840.89