Finding the Third Proportional to 144,378 and 349,870.50

Step by Step Solution

1. Step 1: Write the proportion equation
   144,378 : 349,870.50 = 349,870.50 : x
2. Step 2: Convert to fraction form
   144,378/349,870.50 = 349,870.50/x
3. Step 3: Cross multiply
   144,378x = 349,870.50 × 349,870.50
4. Step 4: Simplify right side
   144,378x = 122,409,366,770.25
5. Step 5: Solve for x
   x = 122,409,366,770.25/144,378
6. Step 6: Final answer
   x = 847,839.47