Finding the Third Proportional to 123,612 and 265,860

Step by Step Solution

1. Step 1: Write the proportion equation
   123,612 : 265,860 = 265,860 : x
2. Step 2: Convert to fraction form
   123,612/265,860 = 265,860/x
3. Step 3: Cross multiply
   123,612x = 265,860 × 265,860
4. Step 4: Simplify right side
   123,612x = 70,681,539,600
5. Step 5: Solve for x
   x = 70,681,539,600/123,612
6. Step 6: Final answer
   x = 571,801.60