Finding the Third Proportional to 637,445 and 1,390,801

Step by Step Solution

1. Step 1: Write the proportion equation
   637,445 : 1,390,801 = 1,390,801 : x
2. Step 2: Convert to fraction form
   637,445/1,390,801 = 1,390,801/x
3. Step 3: Cross multiply
   637,445x = 1,390,801 × 1,390,801
4. Step 4: Simplify right side
   637,445x = 1,934,327,421,601
5. Step 5: Solve for x
   x = 1,934,327,421,601/637,445
6. Step 6: Final answer
   x = 3,034,500.89