Finding the Third Proportional to 81,867.63 and 123,105.50

Step by Step Solution

1. Step 1: Write the proportion equation
   81,867.63 : 123,105.50 = 123,105.50 : x
2. Step 2: Convert to fraction form
   81,867.63/123,105.50 = 123,105.50/x
3. Step 3: Cross multiply
   81,867.63x = 123,105.50 × 123,105.50
4. Step 4: Simplify right side
   81,867.63x = 15,154,964,130.25
5. Step 5: Solve for x
   x = 15,154,964,130.25/81,867.63
6. Step 6: Final answer
   x = 185,115.47