Finding the Third Proportional to 319,644 and 485,296.88

Step by Step Solution

1. Step 1: Write the proportion equation
   319,644 : 485,296.88 = 485,296.88 : x
2. Step 2: Convert to fraction form
   319,644/485,296.88 = 485,296.88/x
3. Step 3: Cross multiply
   319,644x = 485,296.88 × 485,296.88
4. Step 4: Simplify right side
   319,644x = 235,513,056,884.77
5. Step 5: Solve for x
   x = 235,513,056,884.77/319,644
6. Step 6: Final answer
   x = 736,797.99