Finding the Third Proportional to 81,111 and 108,496.50

Step by Step Solution

1. Step 1: Write the proportion equation
   81,111 : 108,496.50 = 108,496.50 : x
2. Step 2: Convert to fraction form
   81,111/108,496.50 = 108,496.50/x
3. Step 3: Cross multiply
   81,111x = 108,496.50 × 108,496.50
4. Step 4: Simplify right side
   81,111x = 11,771,490,512.25
5. Step 5: Solve for x
   x = 11,771,490,512.25/81,111
6. Step 6: Final answer
   x = 145,128.16