Finding the Third Proportional to 349,559 and 765,812.50

Step by Step Solution

1. Step 1: Write the proportion equation
   349,559 : 765,812.50 = 765,812.50 : x
2. Step 2: Convert to fraction form
   349,559/765,812.50 = 765,812.50/x
3. Step 3: Cross multiply
   349,559x = 765,812.50 × 765,812.50
4. Step 4: Simplify right side
   349,559x = 586,468,785,156.25
5. Step 5: Solve for x
   x = 586,468,785,156.25/349,559
6. Step 6: Final answer
   x = 1,677,739.05