Finding the Third Proportional to 265,734 and 442,890

Step by Step Solution

1. Step 1: Write the proportion equation
   265,734 : 442,890 = 442,890 : x
2. Step 2: Convert to fraction form
   265,734/442,890 = 442,890/x
3. Step 3: Cross multiply
   265,734x = 442,890 × 442,890
4. Step 4: Simplify right side
   265,734x = 196,151,552,100
5. Step 5: Solve for x
   x = 196,151,552,100/265,734
6. Step 6: Final answer
   x = 738,150