Finding the Third Proportional to 143,581.50 and 316,107

Step by Step Solution

1. Step 1: Write the proportion equation
   143,581.50 : 316,107 = 316,107 : x
2. Step 2: Convert to fraction form
   143,581.50/316,107 = 316,107/x
3. Step 3: Cross multiply
   143,581.50x = 316,107 × 316,107
4. Step 4: Simplify right side
   143,581.50x = 99,923,635,449
5. Step 5: Solve for x
   x = 99,923,635,449/143,581.50
6. Step 6: Final answer
   x = 695,936.70