Finding the Third Proportional to 9,890,902 and 21,088,256

Step by Step Solution

1. Step 1: Write the proportion equation
   9,890,902 : 21,088,256 = 21,088,256 : x
2. Step 2: Convert to fraction form
   9,890,902/21,088,256 = 21,088,256/x
3. Step 3: Cross multiply
   9,890,902x = 21,088,256 × 21,088,256
4. Step 4: Simplify right side
   9,890,902x = 444,714,541,121,536
5. Step 5: Solve for x
   x = 444,714,541,121,536/9,890,902
6. Step 6: Final answer
   x = 44,961,980.33