Finding the Third Proportional to 66,123.75 and 99,800.25

Step by Step Solution

1. Step 1: Write the proportion equation
   66,123.75 : 99,800.25 = 99,800.25 : x
2. Step 2: Convert to fraction form
   66,123.75/99,800.25 = 99,800.25/x
3. Step 3: Cross multiply
   66,123.75x = 99,800.25 × 99,800.25
4. Step 4: Simplify right side
   66,123.75x = 9,960,089,900.06
5. Step 5: Solve for x
   x = 9,960,089,900.06/66,123.75
6. Step 6: Final answer
   x = 150,628.03