Finding the Third Proportional to 186,931.50 and 281,145

Step by Step Solution

1. Step 1: Write the proportion equation
   186,931.50 : 281,145 = 281,145 : x
2. Step 2: Convert to fraction form
   186,931.50/281,145 = 281,145/x
3. Step 3: Cross multiply
   186,931.50x = 281,145 × 281,145
4. Step 4: Simplify right side
   186,931.50x = 79,042,511,025
5. Step 5: Solve for x
   x = 79,042,511,025/186,931.50
6. Step 6: Final answer
   x = 422,842.12