Finding the Third Proportional to 21,534.50 and 40,709.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,534.50 : 40,709.50 = 40,709.50 : x
2. Step 2: Convert to fraction form
   21,534.50/40,709.50 = 40,709.50/x
3. Step 3: Cross multiply
   21,534.50x = 40,709.50 × 40,709.50
4. Step 4: Simplify right side
   21,534.50x = 1,657,263,390.25
5. Step 5: Solve for x
   x = 1,657,263,390.25/21,534.50
6. Step 6: Final answer
   x = 76,958.53