Finding the Third Proportional to 3,970.69 and 7,279.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,970.69 : 7,279.88 = 7,279.88 : x
2. Step 2: Convert to fraction form
   3,970.69/7,279.88 = 7,279.88/x
3. Step 3: Cross multiply
   3,970.69x = 7,279.88 × 7,279.88
4. Step 4: Simplify right side
   3,970.69x = 52,996,580.02
5. Step 5: Solve for x
   x = 52,996,580.02/3,970.69
6. Step 6: Final answer
   x = 13,346.95