Finding the Third Proportional to 56,731.78 and 77,085.56

Step by Step Solution

1. Step 1: Write the proportion equation
   56,731.78 : 77,085.56 = 77,085.56 : x
2. Step 2: Convert to fraction form
   56,731.78/77,085.56 = 77,085.56/x
3. Step 3: Cross multiply
   56,731.78x = 77,085.56 × 77,085.56
4. Step 4: Simplify right side
   56,731.78x = 5,942,183,945.94
5. Step 5: Solve for x
   x = 5,942,183,945.94/56,731.78
6. Step 6: Final answer
   x = 104,741.71