Finding the Third Proportional to 91,815 and 140,445

Step by Step Solution

1. Step 1: Write the proportion equation
   91,815 : 140,445 = 140,445 : x
2. Step 2: Convert to fraction form
   91,815/140,445 = 140,445/x
3. Step 3: Cross multiply
   91,815x = 140,445 × 140,445
4. Step 4: Simplify right side
   91,815x = 19,724,798,025
5. Step 5: Solve for x
   x = 19,724,798,025/91,815
6. Step 6: Final answer
   x = 214,831.98