Finding the Third Proportional to 766,620 and 1,612,680

Step by Step Solution

1. Step 1: Write the proportion equation
   766,620 : 1,612,680 = 1,612,680 : x
2. Step 2: Convert to fraction form
   766,620/1,612,680 = 1,612,680/x
3. Step 3: Cross multiply
   766,620x = 1,612,680 × 1,612,680
4. Step 4: Simplify right side
   766,620x = 2,600,736,782,400
5. Step 5: Solve for x
   x = 2,600,736,782,400/766,620
6. Step 6: Final answer
   x = 3,392,471.87