Finding the Third Proportional to 108,667.50 and 168,121.50

Step by Step Solution

1. Step 1: Write the proportion equation
   108,667.50 : 168,121.50 = 168,121.50 : x
2. Step 2: Convert to fraction form
   108,667.50/168,121.50 = 168,121.50/x
3. Step 3: Cross multiply
   108,667.50x = 168,121.50 × 168,121.50
4. Step 4: Simplify right side
   108,667.50x = 28,264,838,762.25
5. Step 5: Solve for x
   x = 28,264,838,762.25/108,667.50
6. Step 6: Final answer
   x = 260,103.88