Finding the Third Proportional to 639,597.94 and 1,399,366.69

Step by Step Solution

1. Step 1: Write the proportion equation
   639,597.94 : 1,399,366.69 = 1,399,366.69 : x
2. Step 2: Convert to fraction form
   639,597.94/1,399,366.69 = 1,399,366.69/x
3. Step 3: Cross multiply
   639,597.94x = 1,399,366.69 × 1,399,366.69
4. Step 4: Simplify right side
   639,597.94x = 1,958,227,126,084.72
5. Step 5: Solve for x
   x = 1,958,227,126,084.72/639,597.94
6. Step 6: Final answer
   x = 3,061,653.28