Finding the Third Proportional to 123,860 and 263,704

Step by Step Solution

1. Step 1: Write the proportion equation
   123,860 : 263,704 = 263,704 : x
2. Step 2: Convert to fraction form
   123,860/263,704 = 263,704/x
3. Step 3: Cross multiply
   123,860x = 263,704 × 263,704
4. Step 4: Simplify right side
   123,860x = 69,539,799,616
5. Step 5: Solve for x
   x = 69,539,799,616/123,860
6. Step 6: Final answer
   x = 561,438.72