Finding the Third Proportional to 1,219,620 and 1,785,690

Step by Step Solution

1. Step 1: Write the proportion equation
   1,219,620 : 1,785,690 = 1,785,690 : x
2. Step 2: Convert to fraction form
   1,219,620/1,785,690 = 1,785,690/x
3. Step 3: Cross multiply
   1,219,620x = 1,785,690 × 1,785,690
4. Step 4: Simplify right side
   1,219,620x = 3,188,688,776,100
5. Step 5: Solve for x
   x = 3,188,688,776,100/1,219,620
6. Step 6: Final answer
   x = 2,614,493.68