Finding the Third Proportional to 218,790 and 483,507

Step by Step Solution

1. Step 1: Write the proportion equation
   218,790 : 483,507 = 483,507 : x
2. Step 2: Convert to fraction form
   218,790/483,507 = 483,507/x
3. Step 3: Cross multiply
   218,790x = 483,507 × 483,507
4. Step 4: Simplify right side
   218,790x = 233,779,019,049
5. Step 5: Solve for x
   x = 233,779,019,049/218,790
6. Step 6: Final answer
   x = 1,068,508.70