Finding the Third Proportional to 143,731 and 164,490

Step by Step Solution

1. Step 1: Write the proportion equation
   143,731 : 164,490 = 164,490 : x
2. Step 2: Convert to fraction form
   143,731/164,490 = 164,490/x
3. Step 3: Cross multiply
   143,731x = 164,490 × 164,490
4. Step 4: Simplify right side
   143,731x = 27,056,960,100
5. Step 5: Solve for x
   x = 27,056,960,100/143,731
6. Step 6: Final answer
   x = 188,247.21