Finding the Third Proportional to 161,280 and 225,580.50

Step by Step Solution

1. Step 1: Write the proportion equation
   161,280 : 225,580.50 = 225,580.50 : x
2. Step 2: Convert to fraction form
   161,280/225,580.50 = 225,580.50/x
3. Step 3: Cross multiply
   161,280x = 225,580.50 × 225,580.50
4. Step 4: Simplify right side
   161,280x = 50,886,561,980.25
5. Step 5: Solve for x
   x = 50,886,561,980.25/161,280
6. Step 6: Final answer
   x = 315,516.88