Finding the Third Proportional to 320,726 and 692,300

Step by Step Solution

1. Step 1: Write the proportion equation
   320,726 : 692,300 = 692,300 : x
2. Step 2: Convert to fraction form
   320,726/692,300 = 692,300/x
3. Step 3: Cross multiply
   320,726x = 692,300 × 692,300
4. Step 4: Simplify right side
   320,726x = 479,279,290,000
5. Step 5: Solve for x
   x = 479,279,290,000/320,726
6. Step 6: Final answer
   x = 1,494,357.46