Finding the Third Proportional to 669,312 and 1,435,680

Step by Step Solution

1. Step 1: Write the proportion equation
   669,312 : 1,435,680 = 1,435,680 : x
2. Step 2: Convert to fraction form
   669,312/1,435,680 = 1,435,680/x
3. Step 3: Cross multiply
   669,312x = 1,435,680 × 1,435,680
4. Step 4: Simplify right side
   669,312x = 2,061,177,062,400
5. Step 5: Solve for x
   x = 2,061,177,062,400/669,312
6. Step 6: Final answer
   x = 3,079,545.96