Finding the Third Proportional to 161,328 and 250,621.50

Step by Step Solution

1. Step 1: Write the proportion equation
   161,328 : 250,621.50 = 250,621.50 : x
2. Step 2: Convert to fraction form
   161,328/250,621.50 = 250,621.50/x
3. Step 3: Cross multiply
   161,328x = 250,621.50 × 250,621.50
4. Step 4: Simplify right side
   161,328x = 62,811,136,262.25
5. Step 5: Solve for x
   x = 62,811,136,262.25/161,328
6. Step 6: Final answer
   x = 389,338.10