Finding the Third Proportional to 69,077.25 and 123,939

Step by Step Solution

1. Step 1: Write the proportion equation
   69,077.25 : 123,939 = 123,939 : x
2. Step 2: Convert to fraction form
   69,077.25/123,939 = 123,939/x
3. Step 3: Cross multiply
   69,077.25x = 123,939 × 123,939
4. Step 4: Simplify right side
   69,077.25x = 15,360,875,721
5. Step 5: Solve for x
   x = 15,360,875,721/69,077.25
6. Step 6: Final answer
   x = 222,372.43