Finding the Third Proportional to 21,017.81 and 45,357.05

Step by Step Solution

1. Step 1: Write the proportion equation
   21,017.81 : 45,357.05 = 45,357.05 : x
2. Step 2: Convert to fraction form
   21,017.81/45,357.05 = 45,357.05/x
3. Step 3: Cross multiply
   21,017.81x = 45,357.05 × 45,357.05
4. Step 4: Simplify right side
   21,017.81x = 2,057,261,701.22
5. Step 5: Solve for x
   x = 2,057,261,701.22/21,017.81
6. Step 6: Final answer
   x = 97,881.82