Finding the Third Proportional to 183,485 and 404,216

Step by Step Solution

1. Step 1: Write the proportion equation
   183,485 : 404,216 = 404,216 : x
2. Step 2: Convert to fraction form
   183,485/404,216 = 404,216/x
3. Step 3: Cross multiply
   183,485x = 404,216 × 404,216
4. Step 4: Simplify right side
   183,485x = 163,390,574,656
5. Step 5: Solve for x
   x = 163,390,574,656/183,485
6. Step 6: Final answer
   x = 890,484.64