Finding the Third Proportional to 669,688 and 1,404,764

Step by Step Solution

1. Step 1: Write the proportion equation
   669,688 : 1,404,764 = 1,404,764 : x
2. Step 2: Convert to fraction form
   669,688/1,404,764 = 1,404,764/x
3. Step 3: Cross multiply
   669,688x = 1,404,764 × 1,404,764
4. Step 4: Simplify right side
   669,688x = 1,973,361,895,696
5. Step 5: Solve for x
   x = 1,973,361,895,696/669,688
6. Step 6: Final answer
   x = 2,946,688.45