Finding the Third Proportional to 1,370,840 and 2,970,478

Step by Step Solution

1. Step 1: Write the proportion equation
   1,370,840 : 2,970,478 = 2,970,478 : x
2. Step 2: Convert to fraction form
   1,370,840/2,970,478 = 2,970,478/x
3. Step 3: Cross multiply
   1,370,840x = 2,970,478 × 2,970,478
4. Step 4: Simplify right side
   1,370,840x = 8,823,739,548,484
5. Step 5: Solve for x
   x = 8,823,739,548,484/1,370,840
6. Step 6: Final answer
   x = 6,436,739.19