Finding the Third Proportional to 85,320 and 186,168

Step by Step Solution

1. Step 1: Write the proportion equation
   85,320 : 186,168 = 186,168 : x
2. Step 2: Convert to fraction form
   85,320/186,168 = 186,168/x
3. Step 3: Cross multiply
   85,320x = 186,168 × 186,168
4. Step 4: Simplify right side
   85,320x = 34,658,524,224
5. Step 5: Solve for x
   x = 34,658,524,224/85,320
6. Step 6: Final answer
   x = 406,218.05