Finding the Third Proportional to 623,718 and 1,312,634

Step by Step Solution

1. Step 1: Write the proportion equation
   623,718 : 1,312,634 = 1,312,634 : x
2. Step 2: Convert to fraction form
   623,718/1,312,634 = 1,312,634/x
3. Step 3: Cross multiply
   623,718x = 1,312,634 × 1,312,634
4. Step 4: Simplify right side
   623,718x = 1,723,008,017,956
5. Step 5: Solve for x
   x = 1,723,008,017,956/623,718
6. Step 6: Final answer
   x = 2,762,479.23