Finding the Third Proportional to 643,699.50 and 1,019,056.50

Step by Step Solution

1. Step 1: Write the proportion equation
   643,699.50 : 1,019,056.50 = 1,019,056.50 : x
2. Step 2: Convert to fraction form
   643,699.50/1,019,056.50 = 1,019,056.50/x
3. Step 3: Cross multiply
   643,699.50x = 1,019,056.50 × 1,019,056.50
4. Step 4: Simplify right side
   643,699.50x = 1,038,476,150,192.25
5. Step 5: Solve for x
   x = 1,038,476,150,192.25/643,699.50
6. Step 6: Final answer
   x = 1,613,293.39