Finding the Third Proportional to 31,505 and 68,181.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,505 : 68,181.50 = 68,181.50 : x
2. Step 2: Convert to fraction form
   31,505/68,181.50 = 68,181.50/x
3. Step 3: Cross multiply
   31,505x = 68,181.50 × 68,181.50
4. Step 4: Simplify right side
   31,505x = 4,648,716,942.25
5. Step 5: Solve for x
   x = 4,648,716,942.25/31,505
6. Step 6: Final answer
   x = 147,554.89