Finding the Third Proportional to 51,661.50 and 74,409.75

Step by Step Solution

1. Step 1: Write the proportion equation
   51,661.50 : 74,409.75 = 74,409.75 : x
2. Step 2: Convert to fraction form
   51,661.50/74,409.75 = 74,409.75/x
3. Step 3: Cross multiply
   51,661.50x = 74,409.75 × 74,409.75
4. Step 4: Simplify right side
   51,661.50x = 5,536,810,895.06
5. Step 5: Solve for x
   x = 5,536,810,895.06/51,661.50
6. Step 6: Final answer
   x = 107,174.80