Finding the Third Proportional to 40,430 and 85,048

Step by Step Solution

1. Step 1: Write the proportion equation
   40,430 : 85,048 = 85,048 : x
2. Step 2: Convert to fraction form
   40,430/85,048 = 85,048/x
3. Step 3: Cross multiply
   40,430x = 85,048 × 85,048
4. Step 4: Simplify right side
   40,430x = 7,233,162,304
5. Step 5: Solve for x
   x = 7,233,162,304/40,430
6. Step 6: Final answer
   x = 178,905.82