Finding the Third Proportional to 91,001 and 139,400

Step by Step Solution

1. Step 1: Write the proportion equation
   91,001 : 139,400 = 139,400 : x
2. Step 2: Convert to fraction form
   91,001/139,400 = 139,400/x
3. Step 3: Cross multiply
   91,001x = 139,400 × 139,400
4. Step 4: Simplify right side
   91,001x = 19,432,360,000
5. Step 5: Solve for x
   x = 19,432,360,000/91,001
6. Step 6: Final answer
   x = 213,540.07