Finding the Third Proportional to 56.53 and 85.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56.53 : 85.50 = 85.50 : x
2. Step 2: Convert to fraction form
   56.53/85.50 = 85.50/x
3. Step 3: Cross multiply
   56.53x = 85.50 × 85.50
4. Step 4: Simplify right side
   56.53x = 7,310.25
5. Step 5: Solve for x
   x = 7,310.25/56.53
6. Step 6: Final answer
   x = 129.31