Finding the Third Proportional to 199,105 and 429,905

Step by Step Solution

1. Step 1: Write the proportion equation
   199,105 : 429,905 = 429,905 : x
2. Step 2: Convert to fraction form
   199,105/429,905 = 429,905/x
3. Step 3: Cross multiply
   199,105x = 429,905 × 429,905
4. Step 4: Simplify right side
   199,105x = 184,818,309,025
5. Step 5: Solve for x
   x = 184,818,309,025/199,105
6. Step 6: Final answer
   x = 928,245.44