Finding the Third Proportional to 219,690 and 479,652

Step by Step Solution

1. Step 1: Write the proportion equation
   219,690 : 479,652 = 479,652 : x
2. Step 2: Convert to fraction form
   219,690/479,652 = 479,652/x
3. Step 3: Cross multiply
   219,690x = 479,652 × 479,652
4. Step 4: Simplify right side
   219,690x = 230,066,041,104
5. Step 5: Solve for x
   x = 230,066,041,104/219,690
6. Step 6: Final answer
   x = 1,047,230.38