Finding the Third Proportional to 86,865.75 and 187,434

Step by Step Solution

1. Step 1: Write the proportion equation
   86,865.75 : 187,434 = 187,434 : x
2. Step 2: Convert to fraction form
   86,865.75/187,434 = 187,434/x
3. Step 3: Cross multiply
   86,865.75x = 187,434 × 187,434
4. Step 4: Simplify right side
   86,865.75x = 35,131,504,356
5. Step 5: Solve for x
   x = 35,131,504,356/86,865.75
6. Step 6: Final answer
   x = 404,434.48