Finding the Third Proportional to 1,268,312 and 2,641,600

Step by Step Solution

1. Step 1: Write the proportion equation
   1,268,312 : 2,641,600 = 2,641,600 : x
2. Step 2: Convert to fraction form
   1,268,312/2,641,600 = 2,641,600/x
3. Step 3: Cross multiply
   1,268,312x = 2,641,600 × 2,641,600
4. Step 4: Simplify right side
   1,268,312x = 6,978,050,560,000
5. Step 5: Solve for x
   x = 6,978,050,560,000/1,268,312
6. Step 6: Final answer
   x = 5,501,840.68