Finding the Third Proportional to 170,185.50 and 370,215

Step by Step Solution

1. Step 1: Write the proportion equation
   170,185.50 : 370,215 = 370,215 : x
2. Step 2: Convert to fraction form
   170,185.50/370,215 = 370,215/x
3. Step 3: Cross multiply
   170,185.50x = 370,215 × 370,215
4. Step 4: Simplify right side
   170,185.50x = 137,059,146,225
5. Step 5: Solve for x
   x = 137,059,146,225/170,185.50
6. Step 6: Final answer
   x = 805,351.49