Finding the Third Proportional to 399,096 and 586,973.25

Step by Step Solution

1. Step 1: Write the proportion equation
   399,096 : 586,973.25 = 586,973.25 : x
2. Step 2: Convert to fraction form
   399,096/586,973.25 = 586,973.25/x
3. Step 3: Cross multiply
   399,096x = 586,973.25 × 586,973.25
4. Step 4: Simplify right side
   399,096x = 344,537,596,215.56
5. Step 5: Solve for x
   x = 344,537,596,215.56/399,096
6. Step 6: Final answer
   x = 863,295.04