Finding the Third Proportional to 81,389.81 and 169,016.63

Step by Step Solution

1. Step 1: Write the proportion equation
   81,389.81 : 169,016.63 = 169,016.63 : x
2. Step 2: Convert to fraction form
   81,389.81/169,016.63 = 169,016.63/x
3. Step 3: Cross multiply
   81,389.81x = 169,016.63 × 169,016.63
4. Step 4: Simplify right side
   81,389.81x = 28,566,619,526.39
5. Step 5: Solve for x
   x = 28,566,619,526.39/81,389.81
6. Step 6: Final answer
   x = 350,985.20