Finding the Third Proportional to 21,343.50 and 51,698.25

Step by Step Solution

1. Step 1: Write the proportion equation
   21,343.50 : 51,698.25 = 51,698.25 : x
2. Step 2: Convert to fraction form
   21,343.50/51,698.25 = 51,698.25/x
3. Step 3: Cross multiply
   21,343.50x = 51,698.25 × 51,698.25
4. Step 4: Simplify right side
   21,343.50x = 2,672,709,053.06
5. Step 5: Solve for x
   x = 2,672,709,053.06/21,343.50
6. Step 6: Final answer
   x = 125,223.56