Finding the Third Proportional to 208,422 and 322,930.50

Step by Step Solution

1. Step 1: Write the proportion equation
   208,422 : 322,930.50 = 322,930.50 : x
2. Step 2: Convert to fraction form
   208,422/322,930.50 = 322,930.50/x
3. Step 3: Cross multiply
   208,422x = 322,930.50 × 322,930.50
4. Step 4: Simplify right side
   208,422x = 104,284,107,830.25
5. Step 5: Solve for x
   x = 104,284,107,830.25/208,422
6. Step 6: Final answer
   x = 500,350.77