Finding the Third Proportional to 27,279 and 42,385.50

Step by Step Solution

1. Step 1: Write the proportion equation
   27,279 : 42,385.50 = 42,385.50 : x
2. Step 2: Convert to fraction form
   27,279/42,385.50 = 42,385.50/x
3. Step 3: Cross multiply
   27,279x = 42,385.50 × 42,385.50
4. Step 4: Simplify right side
   27,279x = 1,796,530,610.25
5. Step 5: Solve for x
   x = 1,796,530,610.25/27,279
6. Step 6: Final answer
   x = 65,857.64