Finding the Third Proportional to 677,854 and 1,445,780

Step by Step Solution

1. Step 1: Write the proportion equation
   677,854 : 1,445,780 = 1,445,780 : x
2. Step 2: Convert to fraction form
   677,854/1,445,780 = 1,445,780/x
3. Step 3: Cross multiply
   677,854x = 1,445,780 × 1,445,780
4. Step 4: Simplify right side
   677,854x = 2,090,279,808,400
5. Step 5: Solve for x
   x = 2,090,279,808,400/677,854
6. Step 6: Final answer
   x = 3,083,672.60