Finding the Third Proportional to 39,456 and 86,196

Step by Step Solution

1. Step 1: Write the proportion equation
   39,456 : 86,196 = 86,196 : x
2. Step 2: Convert to fraction form
   39,456/86,196 = 86,196/x
3. Step 3: Cross multiply
   39,456x = 86,196 × 86,196
4. Step 4: Simplify right side
   39,456x = 7,429,750,416
5. Step 5: Solve for x
   x = 7,429,750,416/39,456
6. Step 6: Final answer
   x = 188,304.70