Finding the Third Proportional to 1,217,290 and 1,899,630

Step by Step Solution

1. Step 1: Write the proportion equation
   1,217,290 : 1,899,630 = 1,899,630 : x
2. Step 2: Convert to fraction form
   1,217,290/1,899,630 = 1,899,630/x
3. Step 3: Cross multiply
   1,217,290x = 1,899,630 × 1,899,630
4. Step 4: Simplify right side
   1,217,290x = 3,608,594,136,900
5. Step 5: Solve for x
   x = 3,608,594,136,900/1,217,290
6. Step 6: Final answer
   x = 2,964,449.01