Finding the Third Proportional to 17,139 and 38,216.50

Step by Step Solution

1. Step 1: Write the proportion equation
   17,139 : 38,216.50 = 38,216.50 : x
2. Step 2: Convert to fraction form
   17,139/38,216.50 = 38,216.50/x
3. Step 3: Cross multiply
   17,139x = 38,216.50 × 38,216.50
4. Step 4: Simplify right side
   17,139x = 1,460,500,872.25
5. Step 5: Solve for x
   x = 1,460,500,872.25/17,139
6. Step 6: Final answer
   x = 85,215.06