Finding the Third Proportional to 1,021,738 and 2,190,276

Step by Step Solution

1. Step 1: Write the proportion equation
   1,021,738 : 2,190,276 = 2,190,276 : x
2. Step 2: Convert to fraction form
   1,021,738/2,190,276 = 2,190,276/x
3. Step 3: Cross multiply
   1,021,738x = 2,190,276 × 2,190,276
4. Step 4: Simplify right side
   1,021,738x = 4,797,308,956,176
5. Step 5: Solve for x
   x = 4,797,308,956,176/1,021,738
6. Step 6: Final answer
   x = 4,695,243.75