Finding the Third Proportional to 1,209,218 and 1,807,508

Step by Step Solution

1. Step 1: Write the proportion equation
   1,209,218 : 1,807,508 = 1,807,508 : x
2. Step 2: Convert to fraction form
   1,209,218/1,807,508 = 1,807,508/x
3. Step 3: Cross multiply
   1,209,218x = 1,807,508 × 1,807,508
4. Step 4: Simplify right side
   1,209,218x = 3,267,085,170,064
5. Step 5: Solve for x
   x = 3,267,085,170,064/1,209,218
6. Step 6: Final answer
   x = 2,701,816.52