Finding the Third Proportional to 21,817 and 33,130.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,817 : 33,130.50 = 33,130.50 : x
2. Step 2: Convert to fraction form
   21,817/33,130.50 = 33,130.50/x
3. Step 3: Cross multiply
   21,817x = 33,130.50 × 33,130.50
4. Step 4: Simplify right side
   21,817x = 1,097,630,030.25
5. Step 5: Solve for x
   x = 1,097,630,030.25/21,817
6. Step 6: Final answer
   x = 50,310.77