Finding the Third Proportional to 81,373.50 and 123,207

Step by Step Solution

1. Step 1: Write the proportion equation
   81,373.50 : 123,207 = 123,207 : x
2. Step 2: Convert to fraction form
   81,373.50/123,207 = 123,207/x
3. Step 3: Cross multiply
   81,373.50x = 123,207 × 123,207
4. Step 4: Simplify right side
   81,373.50x = 15,179,964,849
5. Step 5: Solve for x
   x = 15,179,964,849/81,373.50
6. Step 6: Final answer
   x = 186,546.79