Finding the Third Proportional to 3,334.50 and 5,139

Step by Step Solution

1. Step 1: Write the proportion equation
   3,334.50 : 5,139 = 5,139 : x
2. Step 2: Convert to fraction form
   3,334.50/5,139 = 5,139/x
3. Step 3: Cross multiply
   3,334.50x = 5,139 × 5,139
4. Step 4: Simplify right side
   3,334.50x = 26,409,321
5. Step 5: Solve for x
   x = 26,409,321/3,334.50
6. Step 6: Final answer
   x = 7,920.02