Finding the Third Proportional to 10,425 and 21,274.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,425 : 21,274.50 = 21,274.50 : x
2. Step 2: Convert to fraction form
   10,425/21,274.50 = 21,274.50/x
3. Step 3: Cross multiply
   10,425x = 21,274.50 × 21,274.50
4. Step 4: Simplify right side
   10,425x = 452,604,350.25
5. Step 5: Solve for x
   x = 452,604,350.25/10,425
6. Step 6: Final answer
   x = 43,415.29