Finding the Third Proportional to 45.31 and 69.31

Step by Step Solution

1. Step 1: Write the proportion equation
   45.31 : 69.31 = 69.31 : x
2. Step 2: Convert to fraction form
   45.31/69.31 = 69.31/x
3. Step 3: Cross multiply
   45.31x = 69.31 × 69.31
4. Step 4: Simplify right side
   45.31x = 4,804.22
5. Step 5: Solve for x
   x = 4,804.22/45.31
6. Step 6: Final answer
   x = 106.02