Finding the Third Proportional to 12,940 and 28,340

Step by Step Solution

1. Step 1: Write the proportion equation
   12,940 : 28,340 = 28,340 : x
2. Step 2: Convert to fraction form
   12,940/28,340 = 28,340/x
3. Step 3: Cross multiply
   12,940x = 28,340 × 28,340
4. Step 4: Simplify right side
   12,940x = 803,155,600
5. Step 5: Solve for x
   x = 803,155,600/12,940
6. Step 6: Final answer
   x = 62,067.67