Finding the Third Proportional to 989,530 and 2,118,980

Step by Step Solution

1. Step 1: Write the proportion equation
   989,530 : 2,118,980 = 2,118,980 : x
2. Step 2: Convert to fraction form
   989,530/2,118,980 = 2,118,980/x
3. Step 3: Cross multiply
   989,530x = 2,118,980 × 2,118,980
4. Step 4: Simplify right side
   989,530x = 4,490,076,240,400
5. Step 5: Solve for x
   x = 4,490,076,240,400/989,530
6. Step 6: Final answer
   x = 4,537,584.75