Finding the Third Proportional to 369,960 and 554,990

Step by Step Solution

1. Step 1: Write the proportion equation
   369,960 : 554,990 = 554,990 : x
2. Step 2: Convert to fraction form
   369,960/554,990 = 554,990/x
3. Step 3: Cross multiply
   369,960x = 554,990 × 554,990
4. Step 4: Simplify right side
   369,960x = 308,013,900,100
5. Step 5: Solve for x
   x = 308,013,900,100/369,960
6. Step 6: Final answer
   x = 832,560.01