Finding the Third Proportional to 86,454 and 188,055

Step by Step Solution

1. Step 1: Write the proportion equation
   86,454 : 188,055 = 188,055 : x
2. Step 2: Convert to fraction form
   86,454/188,055 = 188,055/x
3. Step 3: Cross multiply
   86,454x = 188,055 × 188,055
4. Step 4: Simplify right side
   86,454x = 35,364,683,025
5. Step 5: Solve for x
   x = 35,364,683,025/86,454
6. Step 6: Final answer
   x = 409,057.80