Finding the Third Proportional to 864,344 and 1,308,440

Step by Step Solution

1. Step 1: Write the proportion equation
   864,344 : 1,308,440 = 1,308,440 : x
2. Step 2: Convert to fraction form
   864,344/1,308,440 = 1,308,440/x
3. Step 3: Cross multiply
   864,344x = 1,308,440 × 1,308,440
4. Step 4: Simplify right side
   864,344x = 1,712,015,233,600
5. Step 5: Solve for x
   x = 1,712,015,233,600/864,344
6. Step 6: Final answer
   x = 1,980,710.50