Finding the Third Proportional to 602,503 and 870,584

Step by Step Solution

1. Step 1: Write the proportion equation
   602,503 : 870,584 = 870,584 : x
2. Step 2: Convert to fraction form
   602,503/870,584 = 870,584/x
3. Step 3: Cross multiply
   602,503x = 870,584 × 870,584
4. Step 4: Simplify right side
   602,503x = 757,916,501,056
5. Step 5: Solve for x
   x = 757,916,501,056/602,503
6. Step 6: Final answer
   x = 1,257,946.44