Finding the Third Proportional to 170,343 and 231,439.78

Step by Step Solution

1. Step 1: Write the proportion equation
   170,343 : 231,439.78 = 231,439.78 : x
2. Step 2: Convert to fraction form
   170,343/231,439.78 = 231,439.78/x
3. Step 3: Cross multiply
   170,343x = 231,439.78 × 231,439.78
4. Step 4: Simplify right side
   170,343x = 53,564,372,345.05
5. Step 5: Solve for x
   x = 53,564,372,345.05/170,343
6. Step 6: Final answer
   x = 314,450.09