Finding the Third Proportional to 167,116 and 258,890

Step by Step Solution

1. Step 1: Write the proportion equation
   167,116 : 258,890 = 258,890 : x
2. Step 2: Convert to fraction form
   167,116/258,890 = 258,890/x
3. Step 3: Cross multiply
   167,116x = 258,890 × 258,890
4. Step 4: Simplify right side
   167,116x = 67,024,032,100
5. Step 5: Solve for x
   x = 67,024,032,100/167,116
6. Step 6: Final answer
   x = 401,062.93