Finding the Third Proportional to 21,179.81 and 45,847.69

Step by Step Solution

1. Step 1: Write the proportion equation
   21,179.81 : 45,847.69 = 45,847.69 : x
2. Step 2: Convert to fraction form
   21,179.81/45,847.69 = 45,847.69/x
3. Step 3: Cross multiply
   21,179.81x = 45,847.69 × 45,847.69
4. Step 4: Simplify right side
   21,179.81x = 2,102,010,449.10
5. Step 5: Solve for x
   x = 2,102,010,449.10/21,179.81
6. Step 6: Final answer
   x = 99,245.94