Finding the Third Proportional to 42,160.50 and 65,711.25

Step by Step Solution

1. Step 1: Write the proportion equation
   42,160.50 : 65,711.25 = 65,711.25 : x
2. Step 2: Convert to fraction form
   42,160.50/65,711.25 = 65,711.25/x
3. Step 3: Cross multiply
   42,160.50x = 65,711.25 × 65,711.25
4. Step 4: Simplify right side
   42,160.50x = 4,317,968,376.56
5. Step 5: Solve for x
   x = 4,317,968,376.56/42,160.50
6. Step 6: Final answer
   x = 102,417.39