Finding the Third Proportional to 1,000,393 and 2,191,418

Step by Step Solution

1. Step 1: Write the proportion equation
   1,000,393 : 2,191,418 = 2,191,418 : x
2. Step 2: Convert to fraction form
   1,000,393/2,191,418 = 2,191,418/x
3. Step 3: Cross multiply
   1,000,393x = 2,191,418 × 2,191,418
4. Step 4: Simplify right side
   1,000,393x = 4,802,312,850,724
5. Step 5: Solve for x
   x = 4,802,312,850,724/1,000,393
6. Step 6: Final answer
   x = 4,800,426.28