Finding the Third Proportional to 72,761.63 and 108,693.56

Step by Step Solution

1. Step 1: Write the proportion equation
   72,761.63 : 108,693.56 = 108,693.56 : x
2. Step 2: Convert to fraction form
   72,761.63/108,693.56 = 108,693.56/x
3. Step 3: Cross multiply
   72,761.63x = 108,693.56 × 108,693.56
4. Step 4: Simplify right side
   72,761.63x = 11,814,290,528.94
5. Step 5: Solve for x
   x = 11,814,290,528.94/72,761.63
6. Step 6: Final answer
   x = 162,369.80