Finding the Third Proportional to 51,805.50 and 68,763.50

Step by Step Solution

1. Step 1: Write the proportion equation
   51,805.50 : 68,763.50 = 68,763.50 : x
2. Step 2: Convert to fraction form
   51,805.50/68,763.50 = 68,763.50/x
3. Step 3: Cross multiply
   51,805.50x = 68,763.50 × 68,763.50
4. Step 4: Simplify right side
   51,805.50x = 4,728,418,932.25
5. Step 5: Solve for x
   x = 4,728,418,932.25/51,805.50
6. Step 6: Final answer
   x = 91,272.53