Finding the Third Proportional to 862.31 and 1,870.59

Step by Step Solution

1. Step 1: Write the proportion equation
   862.31 : 1,870.59 = 1,870.59 : x
2. Step 2: Convert to fraction form
   862.31/1,870.59 = 1,870.59/x
3. Step 3: Cross multiply
   862.31x = 1,870.59 × 1,870.59
4. Step 4: Simplify right side
   862.31x = 3,499,120.98
5. Step 5: Solve for x
   x = 3,499,120.98/862.31
6. Step 6: Final answer
   x = 4,057.83