Finding the Third Proportional to 35,178.47 and 71,789.63

Step by Step Solution

1. Step 1: Write the proportion equation
   35,178.47 : 71,789.63 = 71,789.63 : x
2. Step 2: Convert to fraction form
   35,178.47/71,789.63 = 71,789.63/x
3. Step 3: Cross multiply
   35,178.47x = 71,789.63 × 71,789.63
4. Step 4: Simplify right side
   35,178.47x = 5,153,750,257.64
5. Step 5: Solve for x
   x = 5,153,750,257.64/35,178.47
6. Step 6: Final answer
   x = 146,502.97