Finding the Third Proportional to 248,844 and 388,818

Step by Step Solution

1. Step 1: Write the proportion equation
   248,844 : 388,818 = 388,818 : x
2. Step 2: Convert to fraction form
   248,844/388,818 = 388,818/x
3. Step 3: Cross multiply
   248,844x = 388,818 × 388,818
4. Step 4: Simplify right side
   248,844x = 151,179,437,124
5. Step 5: Solve for x
   x = 151,179,437,124/248,844
6. Step 6: Final answer
   x = 607,526.95