Finding the Third Proportional to 1,398,376 and 2,182,558

Step by Step Solution

1. Step 1: Write the proportion equation
   1,398,376 : 2,182,558 = 2,182,558 : x
2. Step 2: Convert to fraction form
   1,398,376/2,182,558 = 2,182,558/x
3. Step 3: Cross multiply
   1,398,376x = 2,182,558 × 2,182,558
4. Step 4: Simplify right side
   1,398,376x = 4,763,559,423,364
5. Step 5: Solve for x
   x = 4,763,559,423,364/1,398,376
6. Step 6: Final answer
   x = 3,406,493.98