Finding the Third Proportional to 53,491.50 and 82,828.50

Step by Step Solution

1. Step 1: Write the proportion equation
   53,491.50 : 82,828.50 = 82,828.50 : x
2. Step 2: Convert to fraction form
   53,491.50/82,828.50 = 82,828.50/x
3. Step 3: Cross multiply
   53,491.50x = 82,828.50 × 82,828.50
4. Step 4: Simplify right side
   53,491.50x = 6,860,560,412.25
5. Step 5: Solve for x
   x = 6,860,560,412.25/53,491.50
6. Step 6: Final answer
   x = 128,255.15