Finding the Third Proportional to 1,317,218 and 1,986,200

Step by Step Solution

1. Step 1: Write the proportion equation
   1,317,218 : 1,986,200 = 1,986,200 : x
2. Step 2: Convert to fraction form
   1,317,218/1,986,200 = 1,986,200/x
3. Step 3: Cross multiply
   1,317,218x = 1,986,200 × 1,986,200
4. Step 4: Simplify right side
   1,317,218x = 3,944,990,440,000
5. Step 5: Solve for x
   x = 3,944,990,440,000/1,317,218
6. Step 6: Final answer
   x = 2,994,941.19