Finding the Third Proportional to 153,036.50 and 331,005

Step by Step Solution

1. Step 1: Write the proportion equation
   153,036.50 : 331,005 = 331,005 : x
2. Step 2: Convert to fraction form
   153,036.50/331,005 = 331,005/x
3. Step 3: Cross multiply
   153,036.50x = 331,005 × 331,005
4. Step 4: Simplify right side
   153,036.50x = 109,564,310,025
5. Step 5: Solve for x
   x = 109,564,310,025/153,036.50
6. Step 6: Final answer
   x = 715,935.81