Finding the Third Proportional to 670,336 and 1,445,648

Step by Step Solution

1. Step 1: Write the proportion equation
   670,336 : 1,445,648 = 1,445,648 : x
2. Step 2: Convert to fraction form
   670,336/1,445,648 = 1,445,648/x
3. Step 3: Cross multiply
   670,336x = 1,445,648 × 1,445,648
4. Step 4: Simplify right side
   670,336x = 2,089,898,139,904
5. Step 5: Solve for x
   x = 2,089,898,139,904/670,336
6. Step 6: Final answer
   x = 3,117,687.46