Finding the Third Proportional to 89,682.19 and 121,849.31

Step by Step Solution

1. Step 1: Write the proportion equation
   89,682.19 : 121,849.31 = 121,849.31 : x
2. Step 2: Convert to fraction form
   89,682.19/121,849.31 = 121,849.31/x
3. Step 3: Cross multiply
   89,682.19x = 121,849.31 × 121,849.31
4. Step 4: Simplify right side
   89,682.19x = 14,847,254,956.72
5. Step 5: Solve for x
   x = 14,847,254,956.72/89,682.19
6. Step 6: Final answer
   x = 165,554.11