Finding the Third Proportional to 9,426 and 12,799.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,426 : 12,799.50 = 12,799.50 : x
2. Step 2: Convert to fraction form
   9,426/12,799.50 = 12,799.50/x
3. Step 3: Cross multiply
   9,426x = 12,799.50 × 12,799.50
4. Step 4: Simplify right side
   9,426x = 163,827,200.25
5. Step 5: Solve for x
   x = 163,827,200.25/9,426
6. Step 6: Final answer
   x = 17,380.35