Finding the Third Proportional to 55,488 and 121,339.50

Step by Step Solution

1. Step 1: Write the proportion equation
   55,488 : 121,339.50 = 121,339.50 : x
2. Step 2: Convert to fraction form
   55,488/121,339.50 = 121,339.50/x
3. Step 3: Cross multiply
   55,488x = 121,339.50 × 121,339.50
4. Step 4: Simplify right side
   55,488x = 14,723,274,260.25
5. Step 5: Solve for x
   x = 14,723,274,260.25/55,488
6. Step 6: Final answer
   x = 265,341.59