Finding the Third Proportional to 43,780 and 65,994

Step by Step Solution

1. Step 1: Write the proportion equation
   43,780 : 65,994 = 65,994 : x
2. Step 2: Convert to fraction form
   43,780/65,994 = 65,994/x
3. Step 3: Cross multiply
   43,780x = 65,994 × 65,994
4. Step 4: Simplify right side
   43,780x = 4,355,208,036
5. Step 5: Solve for x
   x = 4,355,208,036/43,780
6. Step 6: Final answer
   x = 99,479.40