Finding the Third Proportional to 161,870 and 239,664.50

Step by Step Solution

1. Step 1: Write the proportion equation
   161,870 : 239,664.50 = 239,664.50 : x
2. Step 2: Convert to fraction form
   161,870/239,664.50 = 239,664.50/x
3. Step 3: Cross multiply
   161,870x = 239,664.50 × 239,664.50
4. Step 4: Simplify right side
   161,870x = 57,439,072,560.25
5. Step 5: Solve for x
   x = 57,439,072,560.25/161,870
6. Step 6: Final answer
   x = 354,846.93