Finding the Third Proportional to 611,932.50 and 1,322,280

Step by Step Solution

1. Step 1: Write the proportion equation
   611,932.50 : 1,322,280 = 1,322,280 : x
2. Step 2: Convert to fraction form
   611,932.50/1,322,280 = 1,322,280/x
3. Step 3: Cross multiply
   611,932.50x = 1,322,280 × 1,322,280
4. Step 4: Simplify right side
   611,932.50x = 1,748,424,398,400
5. Step 5: Solve for x
   x = 1,748,424,398,400/611,932.50
6. Step 6: Final answer
   x = 2,857,217.75