Finding the Third Proportional to 1,856.67 and 4,072.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,856.67 : 4,072.15 = 4,072.15 : x
2. Step 2: Convert to fraction form
   1,856.67/4,072.15 = 4,072.15/x
3. Step 3: Cross multiply
   1,856.67x = 4,072.15 × 4,072.15
4. Step 4: Simplify right side
   1,856.67x = 16,582,392.90
5. Step 5: Solve for x
   x = 16,582,392.90/1,856.67
6. Step 6: Final answer
   x = 8,931.25