Finding the Third Proportional to 559,218 and 1,216,740

Step by Step Solution

1. Step 1: Write the proportion equation
   559,218 : 1,216,740 = 1,216,740 : x
2. Step 2: Convert to fraction form
   559,218/1,216,740 = 1,216,740/x
3. Step 3: Cross multiply
   559,218x = 1,216,740 × 1,216,740
4. Step 4: Simplify right side
   559,218x = 1,480,456,227,600
5. Step 5: Solve for x
   x = 1,480,456,227,600/559,218
6. Step 6: Final answer
   x = 2,647,368.70