Finding the Third Proportional to 141,936 and 310,438.50

Step by Step Solution

1. Step 1: Write the proportion equation
   141,936 : 310,438.50 = 310,438.50 : x
2. Step 2: Convert to fraction form
   141,936/310,438.50 = 310,438.50/x
3. Step 3: Cross multiply
   141,936x = 310,438.50 × 310,438.50
4. Step 4: Simplify right side
   141,936x = 96,372,062,282.25
5. Step 5: Solve for x
   x = 96,372,062,282.25/141,936
6. Step 6: Final answer
   x = 678,982.52