Finding the Third Proportional to 3,810 and 8,362.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,810 : 8,362.50 = 8,362.50 : x
2. Step 2: Convert to fraction form
   3,810/8,362.50 = 8,362.50/x
3. Step 3: Cross multiply
   3,810x = 8,362.50 × 8,362.50
4. Step 4: Simplify right side
   3,810x = 69,931,406.25
5. Step 5: Solve for x
   x = 69,931,406.25/3,810
6. Step 6: Final answer
   x = 18,354.70