Finding the Third Proportional to 646,548 and 1,405,111.50

Step by Step Solution

1. Step 1: Write the proportion equation
   646,548 : 1,405,111.50 = 1,405,111.50 : x
2. Step 2: Convert to fraction form
   646,548/1,405,111.50 = 1,405,111.50/x
3. Step 3: Cross multiply
   646,548x = 1,405,111.50 × 1,405,111.50
4. Step 4: Simplify right side
   646,548x = 1,974,338,327,432.25
5. Step 5: Solve for x
   x = 1,974,338,327,432.25/646,548
6. Step 6: Final answer
   x = 3,053,660.87