Finding the Third Proportional to 10,012.50 and 21,105

Step by Step Solution

1. Step 1: Write the proportion equation
   10,012.50 : 21,105 = 21,105 : x
2. Step 2: Convert to fraction form
   10,012.50/21,105 = 21,105/x
3. Step 3: Cross multiply
   10,012.50x = 21,105 × 21,105
4. Step 4: Simplify right side
   10,012.50x = 445,421,025
5. Step 5: Solve for x
   x = 445,421,025/10,012.50
6. Step 6: Final answer
   x = 44,486.49