Finding the Third Proportional to 56.47 and 84.72

Step by Step Solution

1. Step 1: Write the proportion equation
   56.47 : 84.72 = 84.72 : x
2. Step 2: Convert to fraction form
   56.47/84.72 = 84.72/x
3. Step 3: Cross multiply
   56.47x = 84.72 × 84.72
4. Step 4: Simplify right side
   56.47x = 7,177.27
5. Step 5: Solve for x
   x = 7,177.27/56.47
6. Step 6: Final answer
   x = 127.10