Finding the Third Proportional to 68,620.50 and 109,582.88

Step by Step Solution

1. Step 1: Write the proportion equation
   68,620.50 : 109,582.88 = 109,582.88 : x
2. Step 2: Convert to fraction form
   68,620.50/109,582.88 = 109,582.88/x
3. Step 3: Cross multiply
   68,620.50x = 109,582.88 × 109,582.88
4. Step 4: Simplify right side
   68,620.50x = 12,008,406,493.27
5. Step 5: Solve for x
   x = 12,008,406,493.27/68,620.50
6. Step 6: Final answer
   x = 174,997.36