Finding the Third Proportional to 86,536.50 and 187,836

Step by Step Solution

1. Step 1: Write the proportion equation
   86,536.50 : 187,836 = 187,836 : x
2. Step 2: Convert to fraction form
   86,536.50/187,836 = 187,836/x
3. Step 3: Cross multiply
   86,536.50x = 187,836 × 187,836
4. Step 4: Simplify right side
   86,536.50x = 35,282,362,896
5. Step 5: Solve for x
   x = 35,282,362,896/86,536.50
6. Step 6: Final answer
   x = 407,716.55