Finding the Third Proportional to 349,436 and 764,300

Step by Step Solution

1. Step 1: Write the proportion equation
   349,436 : 764,300 = 764,300 : x
2. Step 2: Convert to fraction form
   349,436/764,300 = 764,300/x
3. Step 3: Cross multiply
   349,436x = 764,300 × 764,300
4. Step 4: Simplify right side
   349,436x = 584,154,490,000
5. Step 5: Solve for x
   x = 584,154,490,000/349,436
6. Step 6: Final answer
   x = 1,671,706.66