Finding the Third Proportional to 30,890.53 and 67,795.31

Step by Step Solution

1. Step 1: Write the proportion equation
   30,890.53 : 67,795.31 = 67,795.31 : x
2. Step 2: Convert to fraction form
   30,890.53/67,795.31 = 67,795.31/x
3. Step 3: Cross multiply
   30,890.53x = 67,795.31 × 67,795.31
4. Step 4: Simplify right side
   30,890.53x = 4,596,204,396.97
5. Step 5: Solve for x
   x = 4,596,204,396.97/30,890.53
6. Step 6: Final answer
   x = 148,790.07