Finding the Third Proportional to 123,149.74 and 266,540.15

Step by Step Solution

1. Step 1: Write the proportion equation
   123,149.74 : 266,540.15 = 266,540.15 : x
2. Step 2: Convert to fraction form
   123,149.74/266,540.15 = 266,540.15/x
3. Step 3: Cross multiply
   123,149.74x = 266,540.15 × 266,540.15
4. Step 4: Simplify right side
   123,149.74x = 71,043,651,770.25
5. Step 5: Solve for x
   x = 71,043,651,770.25/123,149.74
6. Step 6: Final answer
   x = 576,888.35