Finding the Third Proportional to 123,365.50 and 265,442

Step by Step Solution

1. Step 1: Write the proportion equation
   123,365.50 : 265,442 = 265,442 : x
2. Step 2: Convert to fraction form
   123,365.50/265,442 = 265,442/x
3. Step 3: Cross multiply
   123,365.50x = 265,442 × 265,442
4. Step 4: Simplify right side
   123,365.50x = 70,459,455,364
5. Step 5: Solve for x
   x = 70,459,455,364/123,365.50
6. Step 6: Final answer
   x = 571,143.92