Finding the Third Proportional to 645,445 and 1,404,887

Step by Step Solution

1. Step 1: Write the proportion equation
   645,445 : 1,404,887 = 1,404,887 : x
2. Step 2: Convert to fraction form
   645,445/1,404,887 = 1,404,887/x
3. Step 3: Cross multiply
   645,445x = 1,404,887 × 1,404,887
4. Step 4: Simplify right side
   645,445x = 1,973,707,482,769
5. Step 5: Solve for x
   x = 1,973,707,482,769/645,445
6. Step 6: Final answer
   x = 3,057,901.89