Finding the Third Proportional to 108,661.50 and 168,112.50

Step by Step Solution

1. Step 1: Write the proportion equation
   108,661.50 : 168,112.50 = 168,112.50 : x
2. Step 2: Convert to fraction form
   108,661.50/168,112.50 = 168,112.50/x
3. Step 3: Cross multiply
   108,661.50x = 168,112.50 × 168,112.50
4. Step 4: Simplify right side
   108,661.50x = 28,261,812,656.25
5. Step 5: Solve for x
   x = 28,261,812,656.25/108,661.50
6. Step 6: Final answer
   x = 260,090.40