Finding the Third Proportional to 51,917.63 and 81,336.38

Step by Step Solution

1. Step 1: Write the proportion equation
   51,917.63 : 81,336.38 = 81,336.38 : x
2. Step 2: Convert to fraction form
   51,917.63/81,336.38 = 81,336.38/x
3. Step 3: Cross multiply
   51,917.63x = 81,336.38 × 81,336.38
4. Step 4: Simplify right side
   51,917.63x = 6,615,605,898.14
5. Step 5: Solve for x
   x = 6,615,605,898.14/51,917.63
6. Step 6: Final answer
   x = 127,425.05