Finding the Third Proportional to 611,860 and 1,312,290

Step by Step Solution

1. Step 1: Write the proportion equation
   611,860 : 1,312,290 = 1,312,290 : x
2. Step 2: Convert to fraction form
   611,860/1,312,290 = 1,312,290/x
3. Step 3: Cross multiply
   611,860x = 1,312,290 × 1,312,290
4. Step 4: Simplify right side
   611,860x = 1,722,105,044,100
5. Step 5: Solve for x
   x = 1,722,105,044,100/611,860
6. Step 6: Final answer
   x = 2,814,540.98