Finding the Third Proportional to 161,487 and 231,158.81

Step by Step Solution

1. Step 1: Write the proportion equation
   161,487 : 231,158.81 = 231,158.81 : x
2. Step 2: Convert to fraction form
   161,487/231,158.81 = 231,158.81/x
3. Step 3: Cross multiply
   161,487x = 231,158.81 × 231,158.81
4. Step 4: Simplify right side
   161,487x = 53,434,396,596.41
5. Step 5: Solve for x
   x = 53,434,396,596.41/161,487
6. Step 6: Final answer
   x = 330,889.77