Finding the Third Proportional to 553,136 and 1,206,384

Step by Step Solution

1. Step 1: Write the proportion equation
   553,136 : 1,206,384 = 1,206,384 : x
2. Step 2: Convert to fraction form
   553,136/1,206,384 = 1,206,384/x
3. Step 3: Cross multiply
   553,136x = 1,206,384 × 1,206,384
4. Step 4: Simplify right side
   553,136x = 1,455,362,355,456
5. Step 5: Solve for x
   x = 1,455,362,355,456/553,136
6. Step 6: Final answer
   x = 2,631,111.26