Finding the Third Proportional to 1,427.31 and 3,310.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,427.31 : 3,310.72 = 3,310.72 : x
2. Step 2: Convert to fraction form
   1,427.31/3,310.72 = 3,310.72/x
3. Step 3: Cross multiply
   1,427.31x = 3,310.72 × 3,310.72
4. Step 4: Simplify right side
   1,427.31x = 10,960,845.71
5. Step 5: Solve for x
   x = 10,960,845.71/1,427.31
6. Step 6: Final answer
   x = 7,679.38