Finding the Third Proportional to 39,475.69 and 51,215.63

Step by Step Solution

1. Step 1: Write the proportion equation
   39,475.69 : 51,215.63 = 51,215.63 : x
2. Step 2: Convert to fraction form
   39,475.69/51,215.63 = 51,215.63/x
3. Step 3: Cross multiply
   39,475.69x = 51,215.63 × 51,215.63
4. Step 4: Simplify right side
   39,475.69x = 2,623,040,244.14
5. Step 5: Solve for x
   x = 2,623,040,244.14/39,475.69
6. Step 6: Final answer
   x = 66,446.98