Finding the Third Proportional to 91,040 and 140,656

Step by Step Solution

1. Step 1: Write the proportion equation
   91,040 : 140,656 = 140,656 : x
2. Step 2: Convert to fraction form
   91,040/140,656 = 140,656/x
3. Step 3: Cross multiply
   91,040x = 140,656 × 140,656
4. Step 4: Simplify right side
   91,040x = 19,784,110,336
5. Step 5: Solve for x
   x = 19,784,110,336/91,040
6. Step 6: Final answer
   x = 217,312.28