Finding the Third Proportional to 1,010,663 and 2,189,391

Step by Step Solution

1. Step 1: Write the proportion equation
   1,010,663 : 2,189,391 = 2,189,391 : x
2. Step 2: Convert to fraction form
   1,010,663/2,189,391 = 2,189,391/x
3. Step 3: Cross multiply
   1,010,663x = 2,189,391 × 2,189,391
4. Step 4: Simplify right side
   1,010,663x = 4,793,432,950,881
5. Step 5: Solve for x
   x = 4,793,432,950,881/1,010,663
6. Step 6: Final answer
   x = 4,742,859.84