Finding the Third Proportional to 21,339 and 34,090.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,339 : 34,090.50 = 34,090.50 : x
2. Step 2: Convert to fraction form
   21,339/34,090.50 = 34,090.50/x
3. Step 3: Cross multiply
   21,339x = 34,090.50 × 34,090.50
4. Step 4: Simplify right side
   21,339x = 1,162,162,190.25
5. Step 5: Solve for x
   x = 1,162,162,190.25/21,339
6. Step 6: Final answer
   x = 54,461.89