Finding the Third Proportional to 779,156 and 1,620,664

Step by Step Solution

1. Step 1: Write the proportion equation
   779,156 : 1,620,664 = 1,620,664 : x
2. Step 2: Convert to fraction form
   779,156/1,620,664 = 1,620,664/x
3. Step 3: Cross multiply
   779,156x = 1,620,664 × 1,620,664
4. Step 4: Simplify right side
   779,156x = 2,626,551,800,896
5. Step 5: Solve for x
   x = 2,626,551,800,896/779,156
6. Step 6: Final answer
   x = 3,371,021.72