Finding the Third Proportional to 285,368 and 674,870

Step by Step Solution

1. Step 1: Write the proportion equation
   285,368 : 674,870 = 674,870 : x
2. Step 2: Convert to fraction form
   285,368/674,870 = 674,870/x
3. Step 3: Cross multiply
   285,368x = 674,870 × 674,870
4. Step 4: Simplify right side
   285,368x = 455,449,516,900
5. Step 5: Solve for x
   x = 455,449,516,900/285,368
6. Step 6: Final answer
   x = 1,596,007.67