Finding the Third Proportional to 53,642.41 and 81,154.09

Step by Step Solution

1. Step 1: Write the proportion equation
   53,642.41 : 81,154.09 = 81,154.09 : x
2. Step 2: Convert to fraction form
   53,642.41/81,154.09 = 81,154.09/x
3. Step 3: Cross multiply
   53,642.41x = 81,154.09 × 81,154.09
4. Step 4: Simplify right side
   53,642.41x = 6,585,986,298.37
5. Step 5: Solve for x
   x = 6,585,986,298.37/53,642.41
6. Step 6: Final answer
   x = 122,775.74