Finding the Third Proportional to 123,159.75 and 265,311

Step by Step Solution

1. Step 1: Write the proportion equation
   123,159.75 : 265,311 = 265,311 : x
2. Step 2: Convert to fraction form
   123,159.75/265,311 = 265,311/x
3. Step 3: Cross multiply
   123,159.75x = 265,311 × 265,311
4. Step 4: Simplify right side
   123,159.75x = 70,389,926,721
5. Step 5: Solve for x
   x = 70,389,926,721/123,159.75
6. Step 6: Final answer
   x = 571,533.53