Finding the Third Proportional to 278,786 and 602,116

Step by Step Solution

1. Step 1: Write the proportion equation
   278,786 : 602,116 = 602,116 : x
2. Step 2: Convert to fraction form
   278,786/602,116 = 602,116/x
3. Step 3: Cross multiply
   278,786x = 602,116 × 602,116
4. Step 4: Simplify right side
   278,786x = 362,543,677,456
5. Step 5: Solve for x
   x = 362,543,677,456/278,786
6. Step 6: Final answer
   x = 1,300,437.17