Finding the Third Proportional to 199,790 and 425,008

Step by Step Solution

1. Step 1: Write the proportion equation
   199,790 : 425,008 = 425,008 : x
2. Step 2: Convert to fraction form
   199,790/425,008 = 425,008/x
3. Step 3: Cross multiply
   199,790x = 425,008 × 425,008
4. Step 4: Simplify right side
   199,790x = 180,631,800,064
5. Step 5: Solve for x
   x = 180,631,800,064/199,790
6. Step 6: Final answer
   x = 904,108.31