Finding the Third Proportional to 221,534 and 485,958

Step by Step Solution

1. Step 1: Write the proportion equation
   221,534 : 485,958 = 485,958 : x
2. Step 2: Convert to fraction form
   221,534/485,958 = 485,958/x
3. Step 3: Cross multiply
   221,534x = 485,958 × 485,958
4. Step 4: Simplify right side
   221,534x = 236,155,177,764
5. Step 5: Solve for x
   x = 236,155,177,764/221,534
6. Step 6: Final answer
   x = 1,065,999.70