Finding the Third Proportional to 410.86 and 886.60

Step by Step Solution

1. Step 1: Write the proportion equation
   410.86 : 886.60 = 886.60 : x
2. Step 2: Convert to fraction form
   410.86/886.60 = 886.60/x
3. Step 3: Cross multiply
   410.86x = 886.60 × 886.60
4. Step 4: Simplify right side
   410.86x = 786,059.52
5. Step 5: Solve for x
   x = 786,059.52/410.86
6. Step 6: Final answer
   x = 1,913.19