Finding the Third Proportional to 611,842 and 1,312,258

Step by Step Solution

1. Step 1: Write the proportion equation
   611,842 : 1,312,258 = 1,312,258 : x
2. Step 2: Convert to fraction form
   611,842/1,312,258 = 1,312,258/x
3. Step 3: Cross multiply
   611,842x = 1,312,258 × 1,312,258
4. Step 4: Simplify right side
   611,842x = 1,722,021,058,564
5. Step 5: Solve for x
   x = 1,722,021,058,564/611,842
6. Step 6: Final answer
   x = 2,814,486.52