Finding the Third Proportional to 51,431.63 and 80,154.56

Step by Step Solution

1. Step 1: Write the proportion equation
   51,431.63 : 80,154.56 = 80,154.56 : x
2. Step 2: Convert to fraction form
   51,431.63/80,154.56 = 80,154.56/x
3. Step 3: Cross multiply
   51,431.63x = 80,154.56 × 80,154.56
4. Step 4: Simplify right side
   51,431.63x = 6,424,753,889.57
5. Step 5: Solve for x
   x = 6,424,753,889.57/51,431.63
6. Step 6: Final answer
   x = 124,918.35