Finding the Third Proportional to 72,799 and 109,711.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,799 : 109,711.50 = 109,711.50 : x
2. Step 2: Convert to fraction form
   72,799/109,711.50 = 109,711.50/x
3. Step 3: Cross multiply
   72,799x = 109,711.50 × 109,711.50
4. Step 4: Simplify right side
   72,799x = 12,036,613,232.25
5. Step 5: Solve for x
   x = 12,036,613,232.25/72,799
6. Step 6: Final answer
   x = 165,340.37