Finding the Third Proportional to 79,111.88 and 161,161.50

Step by Step Solution

1. Step 1: Write the proportion equation
   79,111.88 : 161,161.50 = 161,161.50 : x
2. Step 2: Convert to fraction form
   79,111.88/161,161.50 = 161,161.50/x
3. Step 3: Cross multiply
   79,111.88x = 161,161.50 × 161,161.50
4. Step 4: Simplify right side
   79,111.88x = 25,973,029,082.25
5. Step 5: Solve for x
   x = 25,973,029,082.25/79,111.88
6. Step 6: Final answer
   x = 328,307.59