Finding the Third Proportional to 611,400 and 1,340,776

Step by Step Solution

1. Step 1: Write the proportion equation
   611,400 : 1,340,776 = 1,340,776 : x
2. Step 2: Convert to fraction form
   611,400/1,340,776 = 1,340,776/x
3. Step 3: Cross multiply
   611,400x = 1,340,776 × 1,340,776
4. Step 4: Simplify right side
   611,400x = 1,797,680,282,176
5. Step 5: Solve for x
   x = 1,797,680,282,176/611,400
6. Step 6: Final answer
   x = 2,940,268.70