Finding the Third Proportional to 1,429,496 and 2,211,420

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429,496 : 2,211,420 = 2,211,420 : x
2. Step 2: Convert to fraction form
   1,429,496/2,211,420 = 2,211,420/x
3. Step 3: Cross multiply
   1,429,496x = 2,211,420 × 2,211,420
4. Step 4: Simplify right side
   1,429,496x = 4,890,378,416,400
5. Step 5: Solve for x
   x = 4,890,378,416,400/1,429,496
6. Step 6: Final answer
   x = 3,421,050.79