Finding the Third Proportional to 221,111 and 333,516

Step by Step Solution

1. Step 1: Write the proportion equation
   221,111 : 333,516 = 333,516 : x
2. Step 2: Convert to fraction form
   221,111/333,516 = 333,516/x
3. Step 3: Cross multiply
   221,111x = 333,516 × 333,516
4. Step 4: Simplify right side
   221,111x = 111,232,922,256
5. Step 5: Solve for x
   x = 111,232,922,256/221,111
6. Step 6: Final answer
   x = 503,063.72