Finding the Third Proportional to 10,215.75 and 21,463.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,215.75 : 21,463.50 = 21,463.50 : x
2. Step 2: Convert to fraction form
   10,215.75/21,463.50 = 21,463.50/x
3. Step 3: Cross multiply
   10,215.75x = 21,463.50 × 21,463.50
4. Step 4: Simplify right side
   10,215.75x = 460,681,832.25
5. Step 5: Solve for x
   x = 460,681,832.25/10,215.75
6. Step 6: Final answer
   x = 45,095.25