Finding the Third Proportional to 42,378.75 and 65,660.63

Step by Step Solution

1. Step 1: Write the proportion equation
   42,378.75 : 65,660.63 = 65,660.63 : x
2. Step 2: Convert to fraction form
   42,378.75/65,660.63 = 65,660.63/x
3. Step 3: Cross multiply
   42,378.75x = 65,660.63 × 65,660.63
4. Step 4: Simplify right side
   42,378.75x = 4,311,317,675.39
5. Step 5: Solve for x
   x = 4,311,317,675.39/42,378.75
6. Step 6: Final answer
   x = 101,733.01