Finding the Third Proportional to 143,077.50 and 308,297

Step by Step Solution

1. Step 1: Write the proportion equation
   143,077.50 : 308,297 = 308,297 : x
2. Step 2: Convert to fraction form
   143,077.50/308,297 = 308,297/x
3. Step 3: Cross multiply
   143,077.50x = 308,297 × 308,297
4. Step 4: Simplify right side
   143,077.50x = 95,047,040,209
5. Step 5: Solve for x
   x = 95,047,040,209/143,077.50
6. Step 6: Final answer
   x = 664,304.59