Finding the Third Proportional to 864,280 and 1,308,344

Step by Step Solution

1. Step 1: Write the proportion equation
   864,280 : 1,308,344 = 1,308,344 : x
2. Step 2: Convert to fraction form
   864,280/1,308,344 = 1,308,344/x
3. Step 3: Cross multiply
   864,280x = 1,308,344 × 1,308,344
4. Step 4: Simplify right side
   864,280x = 1,711,764,022,336
5. Step 5: Solve for x
   x = 1,711,764,022,336/864,280
6. Step 6: Final answer
   x = 1,980,566.51