Finding the Third Proportional to 40,245 and 85,688

Step by Step Solution

1. Step 1: Write the proportion equation
   40,245 : 85,688 = 85,688 : x
2. Step 2: Convert to fraction form
   40,245/85,688 = 85,688/x
3. Step 3: Cross multiply
   40,245x = 85,688 × 85,688
4. Step 4: Simplify right side
   40,245x = 7,342,433,344
5. Step 5: Solve for x
   x = 7,342,433,344/40,245
6. Step 6: Final answer
   x = 182,443.37