Finding the Third Proportional to 623,666 and 1,320,948

Step by Step Solution

1. Step 1: Write the proportion equation
   623,666 : 1,320,948 = 1,320,948 : x
2. Step 2: Convert to fraction form
   623,666/1,320,948 = 1,320,948/x
3. Step 3: Cross multiply
   623,666x = 1,320,948 × 1,320,948
4. Step 4: Simplify right side
   623,666x = 1,744,903,618,704
5. Step 5: Solve for x
   x = 1,744,903,618,704/623,666
6. Step 6: Final answer
   x = 2,797,817.45