Finding the Third Proportional to 56,691 and 123,743.25

Step by Step Solution

1. Step 1: Write the proportion equation
   56,691 : 123,743.25 = 123,743.25 : x
2. Step 2: Convert to fraction form
   56,691/123,743.25 = 123,743.25/x
3. Step 3: Cross multiply
   56,691x = 123,743.25 × 123,743.25
4. Step 4: Simplify right side
   56,691x = 15,312,391,920.56
5. Step 5: Solve for x
   x = 15,312,391,920.56/56,691
6. Step 6: Final answer
   x = 270,102.70