Finding the Third Proportional to 349,245 and 748,309.50

Step by Step Solution

1. Step 1: Write the proportion equation
   349,245 : 748,309.50 = 748,309.50 : x
2. Step 2: Convert to fraction form
   349,245/748,309.50 = 748,309.50/x
3. Step 3: Cross multiply
   349,245x = 748,309.50 × 748,309.50
4. Step 4: Simplify right side
   349,245x = 559,967,107,790.25
5. Step 5: Solve for x
   x = 559,967,107,790.25/349,245
6. Step 6: Final answer
   x = 1,603,364.71