Finding the Third Proportional to 278,870 and 604,103

Step by Step Solution

1. Step 1: Write the proportion equation
   278,870 : 604,103 = 604,103 : x
2. Step 2: Convert to fraction form
   278,870/604,103 = 604,103/x
3. Step 3: Cross multiply
   278,870x = 604,103 × 604,103
4. Step 4: Simplify right side
   278,870x = 364,940,434,609
5. Step 5: Solve for x
   x = 364,940,434,609/278,870
6. Step 6: Final answer
   x = 1,308,639.99