Finding the Third Proportional to 60,709.50 and 91,912

Step by Step Solution

1. Step 1: Write the proportion equation
   60,709.50 : 91,912 = 91,912 : x
2. Step 2: Convert to fraction form
   60,709.50/91,912 = 91,912/x
3. Step 3: Cross multiply
   60,709.50x = 91,912 × 91,912
4. Step 4: Simplify right side
   60,709.50x = 8,447,815,744
5. Step 5: Solve for x
   x = 8,447,815,744/60,709.50
6. Step 6: Final answer
   x = 139,151.46