Finding the Third Proportional to 143,851.50 and 319,143

Step by Step Solution

1. Step 1: Write the proportion equation
   143,851.50 : 319,143 = 319,143 : x
2. Step 2: Convert to fraction form
   143,851.50/319,143 = 319,143/x
3. Step 3: Cross multiply
   143,851.50x = 319,143 × 319,143
4. Step 4: Simplify right side
   143,851.50x = 101,852,254,449
5. Step 5: Solve for x
   x = 101,852,254,449/143,851.50
6. Step 6: Final answer
   x = 708,037.49