Finding the Third Proportional to 53,093.81 and 80,320.78

Step by Step Solution

1. Step 1: Write the proportion equation
   53,093.81 : 80,320.78 = 80,320.78 : x
2. Step 2: Convert to fraction form
   53,093.81/80,320.78 = 80,320.78/x
3. Step 3: Cross multiply
   53,093.81x = 80,320.78 × 80,320.78
4. Step 4: Simplify right side
   53,093.81x = 6,451,427,900.61
5. Step 5: Solve for x
   x = 6,451,427,900.61/53,093.81
6. Step 6: Final answer
   x = 121,509.98