Finding the Third Proportional to 64,696.50 and 89,088.75

Step by Step Solution

1. Step 1: Write the proportion equation
   64,696.50 : 89,088.75 = 89,088.75 : x
2. Step 2: Convert to fraction form
   64,696.50/89,088.75 = 89,088.75/x
3. Step 3: Cross multiply
   64,696.50x = 89,088.75 × 89,088.75
4. Step 4: Simplify right side
   64,696.50x = 7,936,805,376.56
5. Step 5: Solve for x
   x = 7,936,805,376.56/64,696.50
6. Step 6: Final answer
   x = 122,677.51