Finding the Third Proportional to 167,063.50 and 258,918

Step by Step Solution

1. Step 1: Write the proportion equation
   167,063.50 : 258,918 = 258,918 : x
2. Step 2: Convert to fraction form
   167,063.50/258,918 = 258,918/x
3. Step 3: Cross multiply
   167,063.50x = 258,918 × 258,918
4. Step 4: Simplify right side
   167,063.50x = 67,038,530,724
5. Step 5: Solve for x
   x = 67,038,530,724/167,063.50
6. Step 6: Final answer
   x = 401,275.75