Finding the Third Proportional to 199,320 and 429,945

Step by Step Solution

1. Step 1: Write the proportion equation
   199,320 : 429,945 = 429,945 : x
2. Step 2: Convert to fraction form
   199,320/429,945 = 429,945/x
3. Step 3: Cross multiply
   199,320x = 429,945 × 429,945
4. Step 4: Simplify right side
   199,320x = 184,852,703,025
5. Step 5: Solve for x
   x = 184,852,703,025/199,320
6. Step 6: Final answer
   x = 927,416.73