Finding the Third Proportional to 221,726 and 486,372

Step by Step Solution

1. Step 1: Write the proportion equation
   221,726 : 486,372 = 486,372 : x
2. Step 2: Convert to fraction form
   221,726/486,372 = 486,372/x
3. Step 3: Cross multiply
   221,726x = 486,372 × 486,372
4. Step 4: Simplify right side
   221,726x = 236,557,722,384
5. Step 5: Solve for x
   x = 236,557,722,384/221,726
6. Step 6: Final answer
   x = 1,066,892.12