Finding the Third Proportional to 1,510.31 and 3,280.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,510.31 : 3,280.50 = 3,280.50 : x
2. Step 2: Convert to fraction form
   1,510.31/3,280.50 = 3,280.50/x
3. Step 3: Cross multiply
   1,510.31x = 3,280.50 × 3,280.50
4. Step 4: Simplify right side
   1,510.31x = 10,761,680.25
5. Step 5: Solve for x
   x = 10,761,680.25/1,510.31
6. Step 6: Final answer
   x = 7,125.47