Finding the Third Proportional to 221,722 and 486,364

Step by Step Solution

1. Step 1: Write the proportion equation
   221,722 : 486,364 = 486,364 : x
2. Step 2: Convert to fraction form
   221,722/486,364 = 486,364/x
3. Step 3: Cross multiply
   221,722x = 486,364 × 486,364
4. Step 4: Simplify right side
   221,722x = 236,549,940,496
5. Step 5: Solve for x
   x = 236,549,940,496/221,722
6. Step 6: Final answer
   x = 1,066,876.27