Finding the Third Proportional to 349,128 and 533,839.50

Step by Step Solution

1. Step 1: Write the proportion equation
   349,128 : 533,839.50 = 533,839.50 : x
2. Step 2: Convert to fraction form
   349,128/533,839.50 = 533,839.50/x
3. Step 3: Cross multiply
   349,128x = 533,839.50 × 533,839.50
4. Step 4: Simplify right side
   349,128x = 284,984,611,760.25
5. Step 5: Solve for x
   x = 284,984,611,760.25/349,128
6. Step 6: Final answer
   x = 816,275.44