Finding the Third Proportional to 641,570 and 1,377,910

Step by Step Solution

1. Step 1: Write the proportion equation
   641,570 : 1,377,910 = 1,377,910 : x
2. Step 2: Convert to fraction form
   641,570/1,377,910 = 1,377,910/x
3. Step 3: Cross multiply
   641,570x = 1,377,910 × 1,377,910
4. Step 4: Simplify right side
   641,570x = 1,898,635,968,100
5. Step 5: Solve for x
   x = 1,898,635,968,100/641,570
6. Step 6: Final answer
   x = 2,959,359.02