Finding the Third Proportional to 199,870 and 425,634

Step by Step Solution

1. Step 1: Write the proportion equation
   199,870 : 425,634 = 425,634 : x
2. Step 2: Convert to fraction form
   199,870/425,634 = 425,634/x
3. Step 3: Cross multiply
   199,870x = 425,634 × 425,634
4. Step 4: Simplify right side
   199,870x = 181,164,301,956
5. Step 5: Solve for x
   x = 181,164,301,956/199,870
6. Step 6: Final answer
   x = 906,410.68