Finding the Third Proportional to 123,359 and 163,998.50

Step by Step Solution

1. Step 1: Write the proportion equation
   123,359 : 163,998.50 = 163,998.50 : x
2. Step 2: Convert to fraction form
   123,359/163,998.50 = 163,998.50/x
3. Step 3: Cross multiply
   123,359x = 163,998.50 × 163,998.50
4. Step 4: Simplify right side
   123,359x = 26,895,508,002.25
5. Step 5: Solve for x
   x = 26,895,508,002.25/123,359
6. Step 6: Final answer
   x = 218,026.31