Finding the Third Proportional to 12,340.69 and 16,870.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,340.69 : 16,870.78 = 16,870.78 : x
2. Step 2: Convert to fraction form
   12,340.69/16,870.78 = 16,870.78/x
3. Step 3: Cross multiply
   12,340.69x = 16,870.78 × 16,870.78
4. Step 4: Simplify right side
   12,340.69x = 284,623,259.99
5. Step 5: Solve for x
   x = 284,623,259.99/12,340.69
6. Step 6: Final answer
   x = 23,063.81