Finding the Third Proportional to 1,870.31 and 2,728.13

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.31 : 2,728.13 = 2,728.13 : x
2. Step 2: Convert to fraction form
   1,870.31/2,728.13 = 2,728.13/x
3. Step 3: Cross multiply
   1,870.31x = 2,728.13 × 2,728.13
4. Step 4: Simplify right side
   1,870.31x = 7,442,666.02
5. Step 5: Solve for x
   x = 7,442,666.02/1,870.31
6. Step 6: Final answer
   x = 3,979.37