Finding the Third Proportional to 217,586 and 477,994

Step by Step Solution

1. Step 1: Write the proportion equation
   217,586 : 477,994 = 477,994 : x
2. Step 2: Convert to fraction form
   217,586/477,994 = 477,994/x
3. Step 3: Cross multiply
   217,586x = 477,994 × 477,994
4. Step 4: Simplify right side
   217,586x = 228,478,264,036
5. Step 5: Solve for x
   x = 228,478,264,036/217,586
6. Step 6: Final answer
   x = 1,050,059.58