Finding the Third Proportional to 21,240 and 51,095.25

Step by Step Solution

1. Step 1: Write the proportion equation
   21,240 : 51,095.25 = 51,095.25 : x
2. Step 2: Convert to fraction form
   21,240/51,095.25 = 51,095.25/x
3. Step 3: Cross multiply
   21,240x = 51,095.25 × 51,095.25
4. Step 4: Simplify right side
   21,240x = 2,610,724,572.56
5. Step 5: Solve for x
   x = 2,610,724,572.56/21,240
6. Step 6: Final answer
   x = 122,915.47