Finding the Third Proportional to 217,489.50 and 479,124

Step by Step Solution

1. Step 1: Write the proportion equation
   217,489.50 : 479,124 = 479,124 : x
2. Step 2: Convert to fraction form
   217,489.50/479,124 = 479,124/x
3. Step 3: Cross multiply
   217,489.50x = 479,124 × 479,124
4. Step 4: Simplify right side
   217,489.50x = 229,559,807,376
5. Step 5: Solve for x
   x = 229,559,807,376/217,489.50
6. Step 6: Final answer
   x = 1,055,498.35