Finding the Third Proportional to 319,931 and 740,659.50

Step by Step Solution

1. Step 1: Write the proportion equation
   319,931 : 740,659.50 = 740,659.50 : x
2. Step 2: Convert to fraction form
   319,931/740,659.50 = 740,659.50/x
3. Step 3: Cross multiply
   319,931x = 740,659.50 × 740,659.50
4. Step 4: Simplify right side
   319,931x = 548,576,494,940.25
5. Step 5: Solve for x
   x = 548,576,494,940.25/319,931
6. Step 6: Final answer
   x = 1,714,671.27