Finding the Third Proportional to 123,275.25 and 262,436.63

Step by Step Solution

1. Step 1: Write the proportion equation
   123,275.25 : 262,436.63 = 262,436.63 : x
2. Step 2: Convert to fraction form
   123,275.25/262,436.63 = 262,436.63/x
3. Step 3: Cross multiply
   123,275.25x = 262,436.63 × 262,436.63
4. Step 4: Simplify right side
   123,275.25x = 68,872,982,141.39
5. Step 5: Solve for x
   x = 68,872,982,141.39/123,275.25
6. Step 6: Final answer
   x = 558,692.70