Finding the Third Proportional to 55,491 and 121,345.50

Step by Step Solution

1. Step 1: Write the proportion equation
   55,491 : 121,345.50 = 121,345.50 : x
2. Step 2: Convert to fraction form
   55,491/121,345.50 = 121,345.50/x
3. Step 3: Cross multiply
   55,491x = 121,345.50 × 121,345.50
4. Step 4: Simplify right side
   55,491x = 14,724,730,370.25
5. Step 5: Solve for x
   x = 14,724,730,370.25/55,491
6. Step 6: Final answer
   x = 265,353.49