Finding the Third Proportional to 55,106.50 and 81,849.50

Step by Step Solution

1. Step 1: Write the proportion equation
   55,106.50 : 81,849.50 = 81,849.50 : x
2. Step 2: Convert to fraction form
   55,106.50/81,849.50 = 81,849.50/x
3. Step 3: Cross multiply
   55,106.50x = 81,849.50 × 81,849.50
4. Step 4: Simplify right side
   55,106.50x = 6,699,340,650.25
5. Step 5: Solve for x
   x = 6,699,340,650.25/55,106.50
6. Step 6: Final answer
   x = 121,570.79