Finding the Third Proportional to 42,809.63 and 68,365.69

Step by Step Solution

1. Step 1: Write the proportion equation
   42,809.63 : 68,365.69 = 68,365.69 : x
2. Step 2: Convert to fraction form
   42,809.63/68,365.69 = 68,365.69/x
3. Step 3: Cross multiply
   42,809.63x = 68,365.69 × 68,365.69
4. Step 4: Simplify right side
   42,809.63x = 4,673,867,227.35
5. Step 5: Solve for x
   x = 4,673,867,227.35/42,809.63
6. Step 6: Final answer
   x = 109,177.95