Finding the Third Proportional to 611,910 and 1,312,402.50

Step by Step Solution

1. Step 1: Write the proportion equation
   611,910 : 1,312,402.50 = 1,312,402.50 : x
2. Step 2: Convert to fraction form
   611,910/1,312,402.50 = 1,312,402.50/x
3. Step 3: Cross multiply
   611,910x = 1,312,402.50 × 1,312,402.50
4. Step 4: Simplify right side
   611,910x = 1,722,400,322,006.25
5. Step 5: Solve for x
   x = 1,722,400,322,006.25/611,910
6. Step 6: Final answer
   x = 2,814,793.55