Finding the Third Proportional to 985,986 and 2,121,390

Step by Step Solution

1. Step 1: Write the proportion equation
   985,986 : 2,121,390 = 2,121,390 : x
2. Step 2: Convert to fraction form
   985,986/2,121,390 = 2,121,390/x
3. Step 3: Cross multiply
   985,986x = 2,121,390 × 2,121,390
4. Step 4: Simplify right side
   985,986x = 4,500,295,532,100
5. Step 5: Solve for x
   x = 4,500,295,532,100/985,986
6. Step 6: Final answer
   x = 4,564,259.06