Finding the Third Proportional to 66,892.50 and 89,222.25

Step by Step Solution

1. Step 1: Write the proportion equation
   66,892.50 : 89,222.25 = 89,222.25 : x
2. Step 2: Convert to fraction form
   66,892.50/89,222.25 = 89,222.25/x
3. Step 3: Cross multiply
   66,892.50x = 89,222.25 × 89,222.25
4. Step 4: Simplify right side
   66,892.50x = 7,960,609,895.06
5. Step 5: Solve for x
   x = 7,960,609,895.06/66,892.50
6. Step 6: Final answer
   x = 119,006.02