Finding the Third Proportional to 981,900 and 2,118,312

Step by Step Solution

1. Step 1: Write the proportion equation
   981,900 : 2,118,312 = 2,118,312 : x
2. Step 2: Convert to fraction form
   981,900/2,118,312 = 2,118,312/x
3. Step 3: Cross multiply
   981,900x = 2,118,312 × 2,118,312
4. Step 4: Simplify right side
   981,900x = 4,487,245,729,344
5. Step 5: Solve for x
   x = 4,487,245,729,344/981,900
6. Step 6: Final answer
   x = 4,569,962.04