Finding the Third Proportional to 83,940 and 126,718.50

Step by Step Solution

1. Step 1: Write the proportion equation
   83,940 : 126,718.50 = 126,718.50 : x
2. Step 2: Convert to fraction form
   83,940/126,718.50 = 126,718.50/x
3. Step 3: Cross multiply
   83,940x = 126,718.50 × 126,718.50
4. Step 4: Simplify right side
   83,940x = 16,057,578,242.25
5. Step 5: Solve for x
   x = 16,057,578,242.25/83,940
6. Step 6: Final answer
   x = 191,298.29