Finding the Third Proportional to 86,644.50 and 186,181.50

Step by Step Solution

1. Step 1: Write the proportion equation
   86,644.50 : 186,181.50 = 186,181.50 : x
2. Step 2: Convert to fraction form
   86,644.50/186,181.50 = 186,181.50/x
3. Step 3: Cross multiply
   86,644.50x = 186,181.50 × 186,181.50
4. Step 4: Simplify right side
   86,644.50x = 34,663,550,942.25
5. Step 5: Solve for x
   x = 34,663,550,942.25/86,644.50
6. Step 6: Final answer
   x = 400,066.37