Finding the Third Proportional to 500,620 and 1,042,658

Step by Step Solution

1. Step 1: Write the proportion equation
   500,620 : 1,042,658 = 1,042,658 : x
2. Step 2: Convert to fraction form
   500,620/1,042,658 = 1,042,658/x
3. Step 3: Cross multiply
   500,620x = 1,042,658 × 1,042,658
4. Step 4: Simplify right side
   500,620x = 1,087,135,704,964
5. Step 5: Solve for x
   x = 1,087,135,704,964/500,620
6. Step 6: Final answer
   x = 2,171,578.65