Finding the Third Proportional to 774,909 and 1,672,145

Step by Step Solution

1. Step 1: Write the proportion equation
   774,909 : 1,672,145 = 1,672,145 : x
2. Step 2: Convert to fraction form
   774,909/1,672,145 = 1,672,145/x
3. Step 3: Cross multiply
   774,909x = 1,672,145 × 1,672,145
4. Step 4: Simplify right side
   774,909x = 2,796,068,901,025
5. Step 5: Solve for x
   x = 2,796,068,901,025/774,909
6. Step 6: Final answer
   x = 3,608,254.52