Finding the Third Proportional to 86,677.50 and 133,045.50

Step by Step Solution

1. Step 1: Write the proportion equation
   86,677.50 : 133,045.50 = 133,045.50 : x
2. Step 2: Convert to fraction form
   86,677.50/133,045.50 = 133,045.50/x
3. Step 3: Cross multiply
   86,677.50x = 133,045.50 × 133,045.50
4. Step 4: Simplify right side
   86,677.50x = 17,701,105,070.25
5. Step 5: Solve for x
   x = 17,701,105,070.25/86,677.50
6. Step 6: Final answer
   x = 204,217.99