Finding the Third Proportional to 812,542 and 1,257,514

Step by Step Solution

1. Step 1: Write the proportion equation
   812,542 : 1,257,514 = 1,257,514 : x
2. Step 2: Convert to fraction form
   812,542/1,257,514 = 1,257,514/x
3. Step 3: Cross multiply
   812,542x = 1,257,514 × 1,257,514
4. Step 4: Simplify right side
   812,542x = 1,581,341,460,196
5. Step 5: Solve for x
   x = 1,581,341,460,196/812,542
6. Step 6: Final answer
   x = 1,946,165.81