Finding the Third Proportional to 6,435 and 10,486.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,435 : 10,486.50 = 10,486.50 : x
2. Step 2: Convert to fraction form
   6,435/10,486.50 = 10,486.50/x
3. Step 3: Cross multiply
   6,435x = 10,486.50 × 10,486.50
4. Step 4: Simplify right side
   6,435x = 109,966,682.25
5. Step 5: Solve for x
   x = 109,966,682.25/6,435
6. Step 6: Final answer
   x = 17,088.84