Finding the Third Proportional to 623,136 and 1,355,616

Step by Step Solution

1. Step 1: Write the proportion equation
   623,136 : 1,355,616 = 1,355,616 : x
2. Step 2: Convert to fraction form
   623,136/1,355,616 = 1,355,616/x
3. Step 3: Cross multiply
   623,136x = 1,355,616 × 1,355,616
4. Step 4: Simplify right side
   623,136x = 1,837,694,739,456
5. Step 5: Solve for x
   x = 1,837,694,739,456/623,136
6. Step 6: Final answer
   x = 2,949,107.00