Finding the Third Proportional to 60,709 and 91,910

Step by Step Solution

1. Step 1: Write the proportion equation
   60,709 : 91,910 = 91,910 : x
2. Step 2: Convert to fraction form
   60,709/91,910 = 91,910/x
3. Step 3: Cross multiply
   60,709x = 91,910 × 91,910
4. Step 4: Simplify right side
   60,709x = 8,447,448,100
5. Step 5: Solve for x
   x = 8,447,448,100/60,709
6. Step 6: Final answer
   x = 139,146.55