Finding the Third Proportional to 139,768.50 and 186,216

Step by Step Solution

1. Step 1: Write the proportion equation
   139,768.50 : 186,216 = 186,216 : x
2. Step 2: Convert to fraction form
   139,768.50/186,216 = 186,216/x
3. Step 3: Cross multiply
   139,768.50x = 186,216 × 186,216
4. Step 4: Simplify right side
   139,768.50x = 34,676,398,656
5. Step 5: Solve for x
   x = 34,676,398,656/139,768.50
6. Step 6: Final answer
   x = 248,098.81