Finding the Third Proportional to 687,930 and 1,042,300

Step by Step Solution

1. Step 1: Write the proportion equation
   687,930 : 1,042,300 = 1,042,300 : x
2. Step 2: Convert to fraction form
   687,930/1,042,300 = 1,042,300/x
3. Step 3: Cross multiply
   687,930x = 1,042,300 × 1,042,300
4. Step 4: Simplify right side
   687,930x = 1,086,389,290,000
5. Step 5: Solve for x
   x = 1,086,389,290,000/687,930
6. Step 6: Final answer
   x = 1,579,214.88