Finding the Third Proportional to 81,693.56 and 169,538.06

Step by Step Solution

1. Step 1: Write the proportion equation
   81,693.56 : 169,538.06 = 169,538.06 : x
2. Step 2: Convert to fraction form
   81,693.56/169,538.06 = 169,538.06/x
3. Step 3: Cross multiply
   81,693.56x = 169,538.06 × 169,538.06
4. Step 4: Simplify right side
   81,693.56x = 28,743,154,636.25
5. Step 5: Solve for x
   x = 28,743,154,636.25/81,693.56
6. Step 6: Final answer
   x = 351,841.12