Finding the Third Proportional to 623,146 and 1,355,638

Step by Step Solution

1. Step 1: Write the proportion equation
   623,146 : 1,355,638 = 1,355,638 : x
2. Step 2: Convert to fraction form
   623,146/1,355,638 = 1,355,638/x
3. Step 3: Cross multiply
   623,146x = 1,355,638 × 1,355,638
4. Step 4: Simplify right side
   623,146x = 1,837,754,387,044
5. Step 5: Solve for x
   x = 1,837,754,387,044/623,146
6. Step 6: Final answer
   x = 2,949,155.39