Finding the Third Proportional to 643,968 and 1,019,461.50

Step by Step Solution

1. Step 1: Write the proportion equation
   643,968 : 1,019,461.50 = 1,019,461.50 : x
2. Step 2: Convert to fraction form
   643,968/1,019,461.50 = 1,019,461.50/x
3. Step 3: Cross multiply
   643,968x = 1,019,461.50 × 1,019,461.50
4. Step 4: Simplify right side
   643,968x = 1,039,301,749,982.25
5. Step 5: Solve for x
   x = 1,039,301,749,982.25/643,968
6. Step 6: Final answer
   x = 1,613,902.79