Finding the Third Proportional to 557,665 and 841,729.50

Step by Step Solution

1. Step 1: Write the proportion equation
   557,665 : 841,729.50 = 841,729.50 : x
2. Step 2: Convert to fraction form
   557,665/841,729.50 = 841,729.50/x
3. Step 3: Cross multiply
   557,665x = 841,729.50 × 841,729.50
4. Step 4: Simplify right side
   557,665x = 708,508,551,170.25
5. Step 5: Solve for x
   x = 708,508,551,170.25/557,665
6. Step 6: Final answer
   x = 1,270,491.34