Finding the Third Proportional to 6,455 and 14,139.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,455 : 14,139.50 = 14,139.50 : x
2. Step 2: Convert to fraction form
   6,455/14,139.50 = 14,139.50/x
3. Step 3: Cross multiply
   6,455x = 14,139.50 × 14,139.50
4. Step 4: Simplify right side
   6,455x = 199,925,460.25
5. Step 5: Solve for x
   x = 199,925,460.25/6,455
6. Step 6: Final answer
   x = 30,972.19