Finding the Third Proportional to 56,116.50 and 124,689

Step by Step Solution

1. Step 1: Write the proportion equation
   56,116.50 : 124,689 = 124,689 : x
2. Step 2: Convert to fraction form
   56,116.50/124,689 = 124,689/x
3. Step 3: Cross multiply
   56,116.50x = 124,689 × 124,689
4. Step 4: Simplify right side
   56,116.50x = 15,547,346,721
5. Step 5: Solve for x
   x = 15,547,346,721/56,116.50
6. Step 6: Final answer
   x = 277,054.82