Finding the Third Proportional to 221,558 and 483,216

Step by Step Solution

1. Step 1: Write the proportion equation
   221,558 : 483,216 = 483,216 : x
2. Step 2: Convert to fraction form
   221,558/483,216 = 483,216/x
3. Step 3: Cross multiply
   221,558x = 483,216 × 483,216
4. Step 4: Simplify right side
   221,558x = 233,497,702,656
5. Step 5: Solve for x
   x = 233,497,702,656/221,558
6. Step 6: Final answer
   x = 1,053,889.74