Finding the Third Proportional to 290,325 and 401,175.50

Step by Step Solution

1. Step 1: Write the proportion equation
   290,325 : 401,175.50 = 401,175.50 : x
2. Step 2: Convert to fraction form
   290,325/401,175.50 = 401,175.50/x
3. Step 3: Cross multiply
   290,325x = 401,175.50 × 401,175.50
4. Step 4: Simplify right side
   290,325x = 160,941,781,800.25
5. Step 5: Solve for x
   x = 160,941,781,800.25/290,325
6. Step 6: Final answer
   x = 554,350.41