Finding the Third Proportional to 669,696 and 1,445,616

Step by Step Solution

1. Step 1: Write the proportion equation
   669,696 : 1,445,616 = 1,445,616 : x
2. Step 2: Convert to fraction form
   669,696/1,445,616 = 1,445,616/x
3. Step 3: Cross multiply
   669,696x = 1,445,616 × 1,445,616
4. Step 4: Simplify right side
   669,696x = 2,089,805,619,456
5. Step 5: Solve for x
   x = 2,089,805,619,456/669,696
6. Step 6: Final answer
   x = 3,120,528.75