Finding the Third Proportional to 611,854 and 1,312,280

Step by Step Solution

1. Step 1: Write the proportion equation
   611,854 : 1,312,280 = 1,312,280 : x
2. Step 2: Convert to fraction form
   611,854/1,312,280 = 1,312,280/x
3. Step 3: Cross multiply
   611,854x = 1,312,280 × 1,312,280
4. Step 4: Simplify right side
   611,854x = 1,722,078,798,400
5. Step 5: Solve for x
   x = 1,722,078,798,400/611,854
6. Step 6: Final answer
   x = 2,814,525.68