Finding the Third Proportional to 21,341.81 and 31,320.75

Step by Step Solution

1. Step 1: Write the proportion equation
   21,341.81 : 31,320.75 = 31,320.75 : x
2. Step 2: Convert to fraction form
   21,341.81/31,320.75 = 31,320.75/x
3. Step 3: Cross multiply
   21,341.81x = 31,320.75 × 31,320.75
4. Step 4: Simplify right side
   21,341.81x = 980,989,380.56
5. Step 5: Solve for x
   x = 980,989,380.56/21,341.81
6. Step 6: Final answer
   x = 45,965.61