Finding the Third Proportional to 28,542.38 and 61,990.31

Step by Step Solution

1. Step 1: Write the proportion equation
   28,542.38 : 61,990.31 = 61,990.31 : x
2. Step 2: Convert to fraction form
   28,542.38/61,990.31 = 61,990.31/x
3. Step 3: Cross multiply
   28,542.38x = 61,990.31 × 61,990.31
4. Step 4: Simplify right side
   28,542.38x = 3,842,798,843.85
5. Step 5: Solve for x
   x = 3,842,798,843.85/28,542.38
6. Step 6: Final answer
   x = 134,634.87