Finding the Third Proportional to 123,243.75 and 265,168.50

Step by Step Solution

1. Step 1: Write the proportion equation
   123,243.75 : 265,168.50 = 265,168.50 : x
2. Step 2: Convert to fraction form
   123,243.75/265,168.50 = 265,168.50/x
3. Step 3: Cross multiply
   123,243.75x = 265,168.50 × 265,168.50
4. Step 4: Simplify right side
   123,243.75x = 70,314,333,392.25
5. Step 5: Solve for x
   x = 70,314,333,392.25/123,243.75
6. Step 6: Final answer
   x = 570,530.62