Finding the Third Proportional to 349,231 and 517,300

Step by Step Solution

1. Step 1: Write the proportion equation
   349,231 : 517,300 = 517,300 : x
2. Step 2: Convert to fraction form
   349,231/517,300 = 517,300/x
3. Step 3: Cross multiply
   349,231x = 517,300 × 517,300
4. Step 4: Simplify right side
   349,231x = 267,599,290,000
5. Step 5: Solve for x
   x = 267,599,290,000/349,231
6. Step 6: Final answer
   x = 766,252.97