Finding the Third Proportional to 645,443 and 1,404,883

Step by Step Solution

1. Step 1: Write the proportion equation
   645,443 : 1,404,883 = 1,404,883 : x
2. Step 2: Convert to fraction form
   645,443/1,404,883 = 1,404,883/x
3. Step 3: Cross multiply
   645,443x = 1,404,883 × 1,404,883
4. Step 4: Simplify right side
   645,443x = 1,973,696,243,689
5. Step 5: Solve for x
   x = 1,973,696,243,689/645,443
6. Step 6: Final answer
   x = 3,057,893.95