Finding the Third Proportional to 99,769.50 and 145,764

Step by Step Solution

1. Step 1: Write the proportion equation
   99,769.50 : 145,764 = 145,764 : x
2. Step 2: Convert to fraction form
   99,769.50/145,764 = 145,764/x
3. Step 3: Cross multiply
   99,769.50x = 145,764 × 145,764
4. Step 4: Simplify right side
   99,769.50x = 21,247,143,696
5. Step 5: Solve for x
   x = 21,247,143,696/99,769.50
6. Step 6: Final answer
   x = 212,962.32