Finding the Third Proportional to 56.53 and 78.56

Step by Step Solution

1. Step 1: Write the proportion equation
   56.53 : 78.56 = 78.56 : x
2. Step 2: Convert to fraction form
   56.53/78.56 = 78.56/x
3. Step 3: Cross multiply
   56.53x = 78.56 × 78.56
4. Step 4: Simplify right side
   56.53x = 6,172.07
5. Step 5: Solve for x
   x = 6,172.07/56.53
6. Step 6: Final answer
   x = 109.18