Finding the Third Proportional to 425,870 and 709,781

Step by Step Solution

1. Step 1: Write the proportion equation
   425,870 : 709,781 = 709,781 : x
2. Step 2: Convert to fraction form
   425,870/709,781 = 709,781/x
3. Step 3: Cross multiply
   425,870x = 709,781 × 709,781
4. Step 4: Simplify right side
   425,870x = 503,789,067,961
5. Step 5: Solve for x
   x = 503,789,067,961/425,870
6. Step 6: Final answer
   x = 1,182,964.44