Finding the Third Proportional to 40,790 and 86,476

Step by Step Solution

1. Step 1: Write the proportion equation
   40,790 : 86,476 = 86,476 : x
2. Step 2: Convert to fraction form
   40,790/86,476 = 86,476/x
3. Step 3: Cross multiply
   40,790x = 86,476 × 86,476
4. Step 4: Simplify right side
   40,790x = 7,478,098,576
5. Step 5: Solve for x
   x = 7,478,098,576/40,790
6. Step 6: Final answer
   x = 183,331.66