Finding the Third Proportional to 7,863 and 10,012.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,863 : 10,012.50 = 10,012.50 : x
2. Step 2: Convert to fraction form
   7,863/10,012.50 = 10,012.50/x
3. Step 3: Cross multiply
   7,863x = 10,012.50 × 10,012.50
4. Step 4: Simplify right side
   7,863x = 100,250,156.25
5. Step 5: Solve for x
   x = 100,250,156.25/7,863
6. Step 6: Final answer
   x = 12,749.61