Finding the Third Proportional to 31,890.38 and 69,519.94

Step by Step Solution

1. Step 1: Write the proportion equation
   31,890.38 : 69,519.94 = 69,519.94 : x
2. Step 2: Convert to fraction form
   31,890.38/69,519.94 = 69,519.94/x
3. Step 3: Cross multiply
   31,890.38x = 69,519.94 × 69,519.94
4. Step 4: Simplify right side
   31,890.38x = 4,833,021,710.00
5. Step 5: Solve for x
   x = 4,833,021,710.00/31,890.38
6. Step 6: Final answer
   x = 151,551.11