Finding the Third Proportional to 290,484 and 400,014

Step by Step Solution

1. Step 1: Write the proportion equation
   290,484 : 400,014 = 400,014 : x
2. Step 2: Convert to fraction form
   290,484/400,014 = 400,014/x
3. Step 3: Cross multiply
   290,484x = 400,014 × 400,014
4. Step 4: Simplify right side
   290,484x = 160,011,200,196
5. Step 5: Solve for x
   x = 160,011,200,196/290,484
6. Step 6: Final answer
   x = 550,843.42