Finding the Third Proportional to 342,412 and 824,900

Step by Step Solution

1. Step 1: Write the proportion equation
   342,412 : 824,900 = 824,900 : x
2. Step 2: Convert to fraction form
   342,412/824,900 = 824,900/x
3. Step 3: Cross multiply
   342,412x = 824,900 × 824,900
4. Step 4: Simplify right side
   342,412x = 680,460,010,000
5. Step 5: Solve for x
   x = 680,460,010,000/342,412
6. Step 6: Final answer
   x = 1,987,255.15